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cartilaginous

Examples

  • How to use cartilaginous in a sentence. Example sentences with the word cartilaginous. This is due to the cartilaginous nature of the bone structure. — “Use cartilaginous in a sentence | cartilaginous sentence examples”,
  • Cartilaginous fishes include the living sharks, rays, and chimaeras, and have true upper All cartilaginous fishes have a pair each of symmetrical pectoral and pelvic fins on the. — “Chondrichthyes (cartilaginous fish, including sharks, rays”,
  • The Chondrichthyes or cartilaginous fishes are a major class of jawed fish that includes the sharks, rays, and skates, and whose skeleton is characterized by rubbery cartilage, which is very light and flexible, rather than bone, as in the bony fishes (class Osteichthyes (such as cod or salmon). — “Chondrichthyes - New World Encyclopedia”,
  • Big- - All the biggest, largest, heaviest, longest and tallest animals of every type!, Information about the different types of cartilaginous fish (rays and sharks), with links to the biggest ever. — “www.big- - The World's Biggest Cartilaginous Fish!”, big-
  • We found 30 dictionaries with English definitions that include the word cartilaginous: Click on the first link on a line below to go directly to a page where "cartilaginous" is defined. General (23 matching dictionaries) cartilaginous: Compact Oxford English Dictionary [home, info]. — “Definitions of cartilaginous - OneLook Dictionary Search”,
  • Find information about different fish species and all that you want to know about fish as pets and animals. The Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage rather than bone. — “Cartilaginous fishes”,
  • Definition of cartilaginous from Webster's New World College Dictionary. Meaning of cartilaginous. Pronunciation of cartilaginous. Definition of the word cartilaginous. Origin of the word cartilaginous. — “cartilaginous - Definition of cartilaginous at ”,
  • Cartilaginous Joint. Lifestyle, fitness & health information about Cartilaginous Joint. Types of Continuous Joints, Types of Joints & Their Movement, Three Major Types of Joints in the Body, Types. — “Cartilaginous Joint | ”,
  • Cartilaginous Fishes: Class Chondrichthyes - The most distinctive feature of this class is that their entire skeleton, including the skull, is cartilaginous without any true bone. The class include the sharks and rays, many of which are described here. — “Open Directory - Science: Biology: Flora and Fauna: Animalia”,
  • Cartilaginous - arthritic - ophthalmic - deafness syndrome information including symptoms, diagnosis, misdiagnosis, treatment, causes, patient stories, videos, forums, prevention, and prognosis. — “Cartilaginous -- arthritic -- ophthalmic -- deafness syndrome”,
  • Unlike the more familiar rayfinned fishes, the cartilaginous fishes have skeletons composed entirely of cartilage. Cartilaginous fishes have four to seven pairs of gill slits that open separately to the outside (except chimaeras have a flap-like covering over the. — “Fishes, Cartilaginous - depth, largest, salt, marine, human”,
  • Hyaline cartilage showing chondrocytes and organelles, lacunae and matrix. Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between Cartilaginous fish (chondrichthyes) like sharks, rays and skates have a skeleton composed. — “Cartilage - Wikipedia, the free encyclopedia”,
  • Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. Next Word in the Dictionary: cartilaginous fish. — “Cartilaginous - Definition and More from the Free Merriam”, merriam-
  • Sharks, rays, skates, and chimaeras together make up a group of fishes known as the cartilaginous fishes (Class Chondrichthyes). This group includes the largest and most formidable marine predators alive today. — “Cartilaginous Fishes - Class Chondrichthyes”,
  • Definition of cartilaginous in the Online Dictionary. Meaning of cartilaginous. Pronunciation of cartilaginous. Translations of cartilaginous. cartilaginous synonyms, cartilaginous antonyms. Information about cartilaginous in the free online. — “cartilaginous - definition of cartilaginous by the Free”,
  • It is basically a two paragraph paraphrase on cartilaginous fishes and what makes them unique, such as the fact that one of their earliest ancestor is the guitarfish. Order Cartilaginous Fishes - Very informative website that goes in-depth about three main species of cartilaginous fishes: sharks,. — “A Hotlist on Cartilaginous fishes”,
  • Definition of cartilaginous in the Medical Dictionary. cartilaginous explanation. Information about cartilaginous in Free online English dictionary. What is cartilaginous? Meaning of cartilaginous medical term. What does cartilaginous mean?. — “cartilaginous - definition of cartilaginous in the Medical”, medical-
  • The cartilaginous fishes solve the problem by maintaining such a high concentration of urea in their blood Both these solutions require internal fertilization, and the cartilaginous fishes were the first vertebrates to develop this. — “The Vertebrates”, dls.ym.edu.tw
  • cartilaginous fish n. A fish whose skeleton consists mainly of cartilage, especially a member of the class Chondrichthyes, such as a shark, skate, or. — “cartilaginous fish: Definition from ”,
  • Cartilaginous fish are a species of fish that are vertebrates or who have a back bone. Read on for more information on cartilaginous fish and cartilaginous fish list. Cartilaginous Fish. — “Cartilaginous Fish”,
  • cartilaginous (comparative more cartilaginous, superlative most Cartilaginous fish such as the angler fish have a skeletal structure made up of cartilage. — “cartilaginous - Wiktionary”,
  • the jawed vertebrates include the extinct ,armored Placoderms, the cartilaginous fish, and the bony fish (including the tetrapods) Learn more about cartilaginous fish from the UCMP. Learn about the anatomy of sharks and bony fishes from the. — “CARTILAGINOUS FISHES”, users.tamuk.edu
  • Sharks, sawfish and stingrays are all cartilaginous fishes (the class Chondrichthyes), while all the Unlike bony fish cartilaginous fish do not have scales, but their body is sometimes covered with small. — “Cartilaginous fish: Sharks, sawfish and stingrays”,

Videos

  • Discovery Channel: Sharks Built for the Kill Sharks are cartilaginous fishes belonging to the class chondrichthyes of the vertebrates
  • Mastodonsaurus Tribute Tribute to one of greatest prehistoric amphibians - Mastodonsaurus. Song by Brain Police. Mastodonsaurus was a large-headed temnospondyl that belonged to a group of advanced, mostly Triassic amphibians called capitosaurs. It was a giant among the stegocephalians and the largest animal of its time (late Triassic, 200 MYA). It looked like a huge frog, but instead of being semicircular, as in frogs, its head was triangular and reached 1.25 m. in length, the total length of the animal would be about 4-5 meters. The large, oval eye sockets were midway along the skull. The jaws were armed with conical teeth. The body was relatively small in proportion to the large head, and the tail was very short. The greatly reduced limbs had cartilaginous carpal and tarsal joints. The marked reduction of the limbs and the sinus lines on the head show that Mastodonsaurus was an aquatic animal which hardly ever left water. It inhabited swampy pools and lived mainly on fish, whose remains have been found in its fossilized excrete (coprolites). From Wikipedia.
  • Dave The Scrunge Worm an animation about a cartilaginous scrunge worm called dave and the difficulty he has in making friends.
  • Sharks vs. Dolphins Selected excerpt, from the first episode, of the award winning 1999 BBC documentary series "Supernatural", where we can learn that dolphins identify themselves with humans and of their eternal rivalry with sharks. Mammals 1 - Cartilaginous 0
  • Operating Room Footage - Deep Temporalis Fascia for Rhinoplasty Another important detail is to ascertain if you have nasal obstruction. I will determine if the nasal obstruction was present preoperatively. If the obstruction is a result of the surgery, a number of questions need to be answered. Did you have reductive rhinoplasty surgery? I will have you point out where the obstruction is. Is it static or dynamic? Present with normal or deep inspiration? What alleviates and worsens the nasal obstruction? What are the characteristics of the nasal obstruction? Was septal surgery performed? With these important questions answered I am now ready to perform the physical examination. For the physical exam, I use a detailed nasal ***ysis worksheet. I will perform a detailed visual and tactile evaluation of the nose. For the bony dorsum, I will examine the osteotomies, presence of open roof deformity or rocker deformity, and hump under- or over- resection. Then I will examine the middle part of your nose, called the middle vault. I will look for middle vault abnormalities such as a narrow middle vault, inverted V deformity or under-resection of the caudal cartilaginous dorsum (Polly beak deformity). For the tip, I will examine tip projection, rotation, support, alar and columellar retraction, over aggressive Weir incisions, and lower lateral crural characteristics such as over-resection, cephalically oriented or bossae formation. Over-resection of the lower lateral cartilage complex in patients with a heavy ...
  • Turtles Turtles are reptiles of the order Testudines (the crown group of the superorder Chelonia), characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield. "Turtle" may either refer to the Testudines as a whole, or to particular Testudines which make up a form taxon that is not monophyletic—see also sea turtle, terrapin, tortoise, and the discussion below. The order Testudines includes both extant (living) and extinct species. The earliest known turtles date from 215 million years ago, making turtles one of the oldest reptile groups and a more ancient group than lizards and snakes. About 300 species are alive today, and some are highly endangered. Like other reptiles, turtles are ectotherms—varying their internal temperature according to the ambient environment, commonly called cold-blooded. Like other amniotes (reptiles, dinosaurs, birds, and mammals), they breathe air and do not lay eggs underwater, although many species live in or around water. The largest turtles are aquatic. source:
  • Worlds deepest living fishes survives under pressure fishes survives under the largest pressure during millions of years. peixe das profundezas sobrevive sob a maior pressao do mar durante milhões de anos. Prehistoric fish are various groups of fishes that lived before recorded history. A few, such as the coelacanth still exist today and are considered living fossils. The first fish and the first vertebrates, were the ostracoderms, which appeared in the Cambrian Period, about 510 million years ago, and became extinct at the end of the Devonian, about 350 million years ago. Ostracoderms were jawless fishes found mainly in fresh water. They were covered with a bony armor or scales and were often less than 30 cm (1 ft) long. The ostracoderms are placed in the class Agnatha along with the living jawless fishes, the lampreys and hagfishes, which are believed to be descended from the ostracoderms. The first fish with jaws, the acanthodians, or spiny sharks, appeared in the late Silurian, about 410 million years ago, and became extinct before the end of the Permian, about 250 million years ago. Acanthodians were generally small sharklike fishes varying from toothless filter-feeders to toothed predators. They were once often classified as an order of the class Placodermi, another group of primitive fishes, but recent authorities tend to place the acanthodiaes or that both groups share a common ancestor. The placoderms, another group of jawed fishes, appeared at the beginning of the Devonian, about 395 million years ago, and became ...
  • Endoscopy in small animal clinic, Oesophagitis in dog Oesophagitis in french buldog. The normal endoscopy image of oesophagus is have that color always paler mucous stomach, namely grey-pink color. For dogs with a pigment language (chau-chau, shar-pei) the mucous membrane of gullet can be pigment. In a norm always contoured to on ventral wall of oesophagus longitudinally trachea and its cartilaginous rings. When a oesophagus is exaggerated, in a norm longitudinal folds are straightened fully.In middle part of oesophagus on a border with distal on his ventral surface the clear pulsation of basic main vessels of heart is marked. In a submucous layer for grown man dogs and cats vascular knots must not be visualized, however for kittens and puppies they can be seen in a norm. In a norm the biopsy of mucous membrane of oesophagus is difficult in connection with the closeness of shell. An esophagogastric transition in a norm is closed, however much his temporal opening ignores pathology, gaping of esophagogastric transition during a few minutes is considered a not norm. A border of transition of oesophageal (pinky) epithelium in a stomach (pink-red) must be bright and a demorcation line is named (or z-line).
  • Hallux Limitus / Rigidus Surgery Functional Hallux Limitus Dr. Glass DPM Podiatry Resource Network [email protected] "Hallux Limitus" and "Hallux Rigidus" describe a pathological condition involving the first metatarsalphalangeal joint. Hallux limitus refers to a limited range of motion during functional use, such as walking and running especially on inclines. When the structural degeneration advances to the state where there is no motion of the first MTPJ at all, it is then called Hallux Rigidus. Morphologic characteristics of Hallux Limitus are visible with the use of Radiography. A radiograph in the AP view would be needed to assess a relatively long first metatarsal in comparison to the lesser metatarsals. When viewed on a lateral radiograph, Hallux Limitus may be noted in correlation with an elevated 1st metatarsal, where either the entire metatarsal itself is abnormally elevated above the lesser metatarsals or simply the head itself is in a relatively dorsiflexed position over the shaft. Over time, Hallux Limitus can lead to the formation of an exostosis on the dorsal surface of the first metatarsal head and a painful swelling on the dorsal surface overlying the first metatarsal head. When conservative care fails, surgical intervention may then be utilized. This procedure involves dissection through the capsule to the joint, followed by an adhesiotomy of fibrotic material on the articulating surface and cheilectomy of superfluous bone and cartilaginous formation. The elevated first metatarsal is brought to ...
  • Federal IND Patient Irvin Rosenfeld Discusses How the US Government Sends Him Medical Cannabis Transcription to follow: My name is Irvin Rosenfeld and I'm the longest surviving federal medical cannabis patient in the United States. In 1972 to 1982 I took on the federal government and in '82 I became the second patient in the country to receive cannabis from the federal government. The name of my disorder is multiple congenital cartilaginous exostosis. Which means I had about 200 bone tumors on my body at puberty, which grew as I grew. I had to have numerous operations to take out the ones that could have gone malignant and killed me. And then they stopped growing, and then at age 19 they started growing again and developing new ones. And they came up with a second disorder, called the variant to the syndrome pseudo pseudo hyper parathyroidism. Now luckily, since I was 22 years old which is 35 years ago, I have not had a tumor grow, and I believe that's because of the medical cannabis. It serves as a muscle relaxant, anti-inflammatory, it serves as a pain ***gesic, and I believe that is has kept the tumors in check and from growing. I don't get any euphoric effect from smoking cannabis, that's really why I can drive with it. Because, it doesn't inhibit me in any way, not sure why, the doctors and scientists think that maybe my cannabinoid receptors are defective. Therefore I'm getting the full medical benefit from it but not the euphoria. anyone other than the 4 people that remain in it today. However, the information about this program, as well as insight into ...
  • Life and death by sharks Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ago, before the time of the dinosaurs. Since that time, sharks have diversified into 440 species, ranging in size from the small dwarf lanternshark, Etmopterus perryi, a deep sea species of only 17 centimetres (6.7 in) in length, to the whale shark, Rhincodon typus, the largest fish, which reaches approximately 12 metres (39 ft 4 in) and which feeds only on plankton, squid, and small fish by filter feeding. Sharks are found in all seas and are common down to depths of 2000 metres (6562 ft). They generally do not live in freshwater, with a few exceptions such as the bull shark and the river shark which can live both in seawater and freshwater.[2] They breathe through five to seven gill slits. Sharks have a covering of dermal denticles that protect their skin from damage and also have parasites that improve their fluid dynamics so the shark can move faster. They have several sets of replaceable teeth. Well-known species such as the great white shark, tiger shark, and the hammerhead are apex predators, at the top of the underwater food chain. Their extraordinary skills as predators fascinate and frighten humans, even as their survival is under serious threat from fishing and other human activities.- Wikipedia Video Compilation: Marcy ✿ Music: "Requiem For A Dream" -Clint Mansell - Lux Aeterna ...
  • My Closed Rhinoplasty (Nose Job) Procedure to Remove a Hump in Beverly Hills Watch my experience as I have a closed rhinoplasty procedure in Beverly Hills, CA. My sister had a rhinoplasty procedure before me that left her with undesirable results. Learning from her experience, I did my research and chose one of the Top Rhinoplasty Specialists in the world, Dr. Paul S. Nassif, to perform my surgery. In Los Angeles rhinoplasty, the majority of incisions are made inside the nose, where they are invisible. In some cases, an incision is made in the area of skin separating the nostrils. Certain amounts of bone and cartilage are then removed or rearranged to provide a newly shaped nose. If the patient has a deviated septum (cartilage and bone causing obstruction inside the nose), septal surgery, called septoplasty, is simultaneously performed. The incision is placed entirely inside the nose. The septoplasty removes portions of cartilage and/or bone that are causing the obstruction. The incisions are then closed with fine suture, followed by placement of a splint to the outside of the nose. The splint helps retain the new shape while the nose heals. Many procedures were performed on my nose including: 1. Septoplasty & Septal Battan Graft, 2. Turbinoplasty, 3. Closed Rhinoplasty - Exposing Nasal Anatomy, 4. Removal of Bony-Cartilaginous Dorsal Hump, 5. Columella Strut Placement, 6. Bruised Infratip Lobular Graft, 7. Osteotomies, 8. Spreader Grafts & 9. Closed Rhinoplasty - Closure of Intercartilaginous & Hemitransfixion ...
  • Skeletal System Check us out at In biology, a skeleton is a rigid framework that provides protection and structure in many types of animal, particularly those of the phylum Chordata and of the superphylum Ecdysozoa. Exoskeletons are external, as is typical of many invertebrates; they enclose the soft tissues and organs of the body. Exoskeletons may undergo periodic moulting as the animal grows. Endoskeletons are internal, as is typical of many vertebrates; they are usually surrounded by skin and musculature, though they often enclose vital organs. Endoskeletons are attachment points for musculature and act as leverage for movement, and in many animals contain marrow, which produces blood cells. Skeletons may or may not be mineralized human skeletons are calcified, while shark skeletons are cartilaginous and may be jointed for flexibility and motility or rigid for structural strength. The average adult human skeleton has around 206 bones. These bones meet at joints, the majority of which are freely movable. The skeleton also contains cartilage for elasticity. Ligaments are strong strips of fibrous connective tissue that hold bones together at joints, thereby stabilizing the skeleton during movement. The human skull shapes the head and face, protects the brain, and houses and protects special sense organs for taste, smell, hearing, vision, and balance. It is constructed from 22 bones, 21 of which are locked together by immovable joints, to form a structure of great strength.
  • Ray in the Oceanarium - Lisbon Batoidea is a superorder of cartilaginous fishes containing more than 500 described species in thir*** families. They are commonly known as rays, but that term is also used specifically for batoids in the order Rajiformes, the "true rays". Batoids include stingrays, skates, electric rays, guitarfishes and sawfishes. Batoids are most closely related to sharks and young batoids look very much like young sharks. Indeed according to recent DNA ***yses the catshark is more closely related to the batoids than to other sharks
  • Paediatric Intubation Granuloma This video shows the typical appearance of intubation granuloma in a child- pale looking benign mass involving the cartilaginous segment of the true vocal folds (yellow circles). The predisposing factors to its formation include traumatic ETT insertion, oversize ETT, poorly secured ETT, under-sedation, prolonged intubation, and undiagnosed reflux laryngitis.
  • Turtle Has An Awesome Orgasm REMIX! Tweet This Video! Subscribe! - A remix is an alternative version of a song, made from an original version. This term is also used for any alterations of media other than song (film, literature etc.). A remixer uses audio mixing to compose an alternate master recording of a song, adding or subtracting elements, or simply changing the equalization, dynamics, pitch, tempo, playing time, or almost any other aspect of the various musical components. Some remixes involve substantial changes to the arrangement of a recorded work, but many are harmonic, such as creating a "vocal up" version of an album cut that emphasizes the lead singer's voice. Songs are remixed for a variety of reasons: * to give a formerly popular song a second chance at radio and club play * to create a stereo or surround sound version of a recording where none was previously available * to improve the fidelity of an older recording in which the original mixdown tape has been lost or degraded * to alter a song to suit a specific music genre or radio format * to alter a song for artistic purposes Remixes should not be confused with edits, which usually involve shortening a final stereo master for marketing or broadcasting purposes. Turtles are reptiles of the order Testudines (the crown group of the superorder Chelonia), characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield. "Turtle" may either refer to the Testudines as a whole ...
  • Veterinary oesophagoscopy for a dog The normal endoscopy image of oesophagus is have that color always paler mucous stomach, namely grey-pink color. For dogs with a pigment language (chau-chau, shar-pei) the mucous membrane of gullet can be pigment. In a norm always contoured to on ventral wall of oesophagus longitudinally trachea and its cartilaginous rings. When a oesophagus is exaggerated, in a norm longitudinal folds are straightened fully.In middle part of oesophagus on a border with distal on his ventral surface the clear pulsation of basic main vessels of heart is marked. In a submucous layer for grown man dogs and cats vascular knots must not be visualized, however for kittens and puppies they can be seen in a norm. In a norm the biopsy of mucous membrane of oesophagus is difficult in connection with the closeness of shell. An esophagogastric transition in a norm is closed, however much his temporal opening ignores pathology, gaping of esophagogastric transition during a few minutes is considered a not norm. A border of transition of oesophageal (pinky) epithelium in a stomach (pink-red) must be bright and a demorcation line is named (or z-line).
  • Histology of the Trachea This is an ***ysis of the histology of the trachea from a foetal mammal (not sure which animal). The slide is PAS stained. The audio isn't very good because it was quiet at the time, you might have to turn your speakers right up to hear what he's on about :)
  • Sting Rays Dasyatidae is a family of rays, cartilaginous marine fishes, related to skates and sharks. Dasyatids are common in tropical coastal waters throughout the world, and there are fresh water species in Asia (Himantura sp.), Africa, and Florida (Dasyatis sabina). The "typical" freshwaters rays in South America, while superficially similar to stingrays, are members of another family, Potamotrygonidae. While most dasyatids are relatively widespread and unlikely to be threatened, there are several species (for example Taeniura meyeni, Dasyatis colarensis, D. garouaensis and D. laosensis) where the conservation status is more problematic, leading to them being listed as vulnerable or endangered by IUCN. The status of several other species are poorly known, leading to them being listed as data deficient. Dasyatids are propelled by motion of their large pectoral fins (commonly mistaken as "wings"). Their stinger is a razor-sharp, barbed, or serrated cartilaginous spine which grows from the ray's whip-like tail (like a fingernail), and can grow as long as 37 cm (about 14.6 inches). On the underside of the spine are two grooves containing venom-secreting glandular tissue. The entire spine is covered with a thin layer of skin called the integumentary sheath, in which venom is concentrated.[1] The venom contains the enzymes 5-nucleotidase and phosphodiesterase which breakdown and kill cells; and the neurotransmitter serotonin which provokes smooth-muscle contractions.[2] This gives them ...
  • Scientific Error in Quran - First the Bones, then CLOTHE WITH Flesh??? Are the bones formed first in an embryo, then clothe or cover with Flesh??? Where in scientific term is the word "Clothe" or Cover ever happen? Any stage of embryonic development, for Flesh to cover over the bones? When one clothe with jacket, it is covered over the body. Imagine a bone cover with flesh is totally NOT scientifically TRUE. Greek doctors have made this theory before Islam. Based on this book "Animal Models of Human Related Calcium Metabolic Disorders" Page 13 which says both bones and muscles are formed in stages from Week 6 to Week 11 and not all bones formed first at the same time and then clothe with muscles. The simple fact is that heart muscle beats normally by 6th week from post-ovulation while first bone mandible was formed only by the 7th week; ribs bones by the 8th week and vertebral bones by the 11th week. So there is no stage where all bones are completely formed, then clothe with the Flesh. According to Asher Ornoy, author of the book Animal Models of Human Related Calcium Metabolic Disorders Page 13, by the 5th week after fertilization, there is indication of the future cartilage in the human embryo. By that time the mesenchymal cells in the regions, where cartilaginous models of bones are to form, enlarge and differentiate into a compact zone of precartilage that assume the shape of future of cartilage. The appearance of primary ossification in different bones of a human feotus was studied by several investigators. A comprehensive summary is ...
  • The Prodigy - We Eat Rhythm - Music Video Superorder Selachimorpha are a type of fish with a full cartilaginous skeleton and a highly streamlined body. [The Prodigy - We Eat Rhythm]
  • Marc Kirschner (Harvard U) Part 1 The Origin of the Vertebrate Nervous System Modern cell and developmental biology has a lot to contribute to our understanding of the deep history of animal origins, which until recently has been largely the province of paleontology. In this set of lectures, I hope to show how recent studies by a very small group of scientists on a virtually unknown phylum of marine organisms, the hemichordates, has helped explain some of the major mysteries of the origin of vertebrates. This is a tour of not only vertebrate origins but the contribution that modern molecular and genomic tools are making to developmental biology. In the Introduction: Vertebrate body plans and the odd phylum of Hemichordates, I discuss the largely anatomical features that we use to identify the Vertebrates as a Subphylum or the chordates as a Phylum. These include such commonly perceived anatomical features, as the blocks of muscle around our trunk, called somites and tail. I also discuss some less obvious features, such as the notochord, a cartilaginous rod found in fish and found at least embryologically in every vertebrate. How did these originate from simpler organisms? I introduce a primitive related phylum, the hemichordates, and a particular animal, the acorn worm. In Part 1: The origin of the vertebrate nervous system: the Hemichordate perspective, I discuss why vertebrates ended up with a centralized nervous system that is highly organized from head to tail. It is surprising that the acorn worm has many of the patterning features of the ...
  • Ex. 17: Phylum Chordata-Shark, Lamprey, Perch (also Molgula) 1) Class Agnatha= Lampreys 2) Class Chondrichthyes= Cartilaginous Fish (sharks, rays) 3) Class Osteichthyes= Bony Fish (perch) Subphylum Urochordata: Molgula= 4 Common Characteristics in Phylum Chordata 1) Notochord (flexible, supporting rod) 2) Dorsal Nerve Cord (hollow) 3) Pharyngeal Gill Slits 4) Post-*** Tail
  • The life of Fish Fish Kingdom: Animalia Phylum: Chordata All fish are aquatic and are found in fresh and salt water throughout the world. There are three main classes: the jawless fish (Agnatha), bony fishes (Osteicthyes) and cartilaginous fishes (Chondrichthyes). The jawless fishes, such as lampreys and hagfish, are the only fish that have sucking mouthparts, which makes them dependent on a parasitic way of life. They are primitive fish and fins are either absent or poorly developed. Bony fish possess true ossified, internal skeletons to support the body tissues and a rigid skull of fused dermal bones. Most also have external scales covering the body and a bony flap, the operculum, covering a single gill exit. The spiracle is reduced or lost in bony fishes and the majority have swim bladders evolved from the primitive fish lung. Their eyes are large and of primary sensory importance. The fins are flexible and often able to be folded against the body. This is the biggest class of fish and includes about 20000 species. There are around 900 species of cartilaginous fish. Sharks and rays are two examples that belong to one subclass (Elasmobranchii). These differ from bony fishes in having flexible, cartilaginous skeletons, sometimes strengthened by salt deposits. Elasmobranchs are covered with tooth-like scales called denticles, which helps strengthen the body's structure. They have multiple, uncovered gill exits and they have a good sense of smell. They have long snouts and their jaws are ...
  • Characteristics of Animal Groups Check us out at Scientists estimate that there may be between 3 and 30 million species of animals on our planet. If you're just starting to learn about animals and wildlife, it would be an overwhelming task to try and memorize species, one by one. Instead, an understanding of the main groups of animals provides a good foundation for further learning. In this article, we'll take a look at six groups of animals, their characteristics and the types of organisms that belong to each group. Once you have a understanding of these six groups, you'll be on your way to grasping the basic characteristics of virtually every animal on the planet. 1. Invertebrates The first animals to evolve were invertebrates. Fossil evidence of invertebrates dates back to the late Precambrian, 600 million years ago. Invertebrates evolved from single-celled microorganisms. Since then, invertebrates have diversified into countless forms. An estimated 97% of all species are alive today are invertebrates. Invertebrates are not a true taxonomic class of animals, they are united more by what they lack (a backbone) than by shared characteristics. Invertebrates include animal groups such as sponges, cnidarians, flatworms, molluscs, arthropods, insects, segmented worms, and echinoderms as well as many other lesser-known groups of animals. 2. Fish were among the first vertebrates to evolve. The earliest known fishes were the ostracoderms, a now-extinct group of jawless fish that appeared in ...
  • Pacific Black Ghost Ratfish (Chimaera) New species of ratfish from the North East Pacific. This specimen was observed in the Gulf of California, Mexico by MBARI's Remotely Operated Vehicle Tiburon in 2003. NEW SPECIES OF "GHOSTSHARK" NAMED BY ACADEMY RESEARCHERS Ancient and bizarre fish is distantly related to sharks; Found off the coast of Southern California and Baja California SAN FRANCISCO (September 21, 2009) — New species are not just discovered in exotic locales—even places as urban as California still yield discoveries of new plants and animals. Academy scientists recently named a new species of chimaera, an ancient and bizarre group of fishes distantly related to sharks, from the coast of Southern California and Baja California, Mexico. The new species, the Eastern Pacific black ghostshark (Hydrolagus melanophasma), was described in the September issue of the international journal Zootaxa by a research team including Academy Research Associates David Ebert (also with Moss Landing Marine Laboratories) and Douglas J. Long (also with the Oakland Museum of California). Additional co-authors included Kelsey James, a graduate student at Moss Landing Marine Laboratories, and Dominique Didier from Millersville University in Pennsylvania. This is the first new species of cartilaginous fish to be described from California waters since 1947. Chimaeras, also called ratfish, rabbitfish, and ghostsharks, are perhaps the oldest and most enigmatic groups of fishes alive today. Their closest living ...
  • Arthroscopy - Dr. Barbro Nordquist Small animal arthroscopy has become a common diagnostic and treatment option available for the small animal veterinarian since the mid 1980's. Advantage of arthroscopy when compared to open arthrotomy has to do with its minimally invasive application. A thorough inspection can be made of the joint and the magnification provided by the camera allows for accurate diagnosis of cartilaginous and other intra-articular pathology. In addition, instruments, including probes, shavers and burrs, allow for treatment as warranted. In this presentation, Dr. Nordquist discusses and shows examples of veterinary arthroscopy at various joints.
  • Spotted Stingray, Suckermouth Catfish, Twig Catfish, Tetra, Brochis Catfish, Discus A sting ray/stingray killed world-famous "Crocodile Hunter," Steve Irwin on September 4. 2006. Although docile, they attack when they think they are in danger. This was a freak accident. Stingray venom is extraordinarily painful, but not normally deadly. However, in Irwin's case the barb pierced his heart. Stingrays generally dont aggressively attack or even actively defend themselves. When they are threatened, their primary reaction is to swim away. The stingrays are a family (Dasyatidae) of rays, and cartilaginous fishes related to sharks.
  • Stingray eating Rare Manatee Fish West Indian manatees endangered Video shows a Sting Ray eating. It also shows West Indian manatees, which are one of the most endangered species in the world. A sting ray/stingray killed world-famous "Crocodile Hunter," Steve Irwin on September 4. 2006. Although docile, they attack when they think they are in danger. This was a freak accident. Stingray venom is extraordinarily painful, but not normally deadly. However, in Irwin's case the barb pierced his heart. Stingrays generally dont aggressively attack or even actively defend themselves. When they are threatened, their primary reaction is to swim away. The stingrays are a family (Dasyatidae) of rays, and cartilaginous fishes related to sharks. The video also shows West Indian manatees, which are one of the most endangered species in the world. Although they look like walruses, manatees are related to elephants and hyraxes. The Columbus Zoos Manatee Coast is one of only 3 located outside of Florida to house West Indian manatees. It is a 190000-gallon indoor habitat that supports endangered West Indian manatees.
  • Endoscopy in small animal clinic, Oesophagitis in dog Oesophagitis in french buldog. The normal endoscopy image of oesophagus is have that color always paler mucous stomach, namely grey-pink color. For dogs with a pigment language (chau-chau, shar-pei) the mucous membrane of gullet can be pigment. In a norm always contoured to on ventral wall of oesophagus longitudinally trachea and its cartilaginous rings. When a oesophagus is exaggerated, in a norm longitudinal folds are straightened fully.In middle part of oesophagus on a border with distal on his ventral surface the clear pulsation of basic main vessels of heart is marked. In a submucous layer for grown man dogs and cats vascular knots must not be visualized, however for kittens and puppies they can be seen in a norm. In a norm the biopsy of mucous membrane of oesophagus is difficult in connection with the closeness of shell. An esophagogastric transition in a norm is closed, however much his temporal opening ignores pathology, gaping of esophagogastric transition during a few minutes is considered a not norm. A border of transition of oesophageal (pinky) epithelium in a stomach (pink-red) must be bright and a demorcation line is named (or z-line).
  • IMPROVE BREATHING TIPS & GUIDE! PART 1 Please visit: - Breathing problems solution reviews, guide, tips and tricks. Choose what best fits to you criteria for breathing problems solution. It's all here and free!
  • Cartilaginous Joints Cartilaginous Joints Cartilaginous joints are found between bones of the spine. A cutaway view of the spine shows that the vertebrae encircling the spinal cord are covered with the clear, glassy connective tissue know as hyaline cartilage. In between the vertebrae are the spinal disks-pads of a tougher, fiber-filled material called fibrocartilage. These disks allow the spine, which would otherwise be inflexible to articulate freely in various directions. Able to withstand compression, the cartilage disks act as shock absorbers, cushioning the spine from injury.
  • Aveoli etc. (Model) - tiah Thanks to Melissa for narrating & Kelly for filming! =D Just follow my blue finger! lol ^-^ 1. Intra-pulmonary bronchi 2. Non-cartilaginous bronchioles 3. Respiratory bronchioles 4. Alveoli 5. Mucous membrane 6. Elastic fibres (black) 7. Smooth muscle (brown) 8. Pulmonary plexus 9. Mucous glands 10. Fibro-cartilaginous layer 11. Pulmonary pleura 12. Limiting membranes 13. Dense capillaries 14. Cartilaginous fibers 15. Elastic fibers 16. Epithelium 17. Bronchial vein plexus 18. Pulmonary vein 19. Pulmonary artery 20. Bronchial artery 21. Anastomosis between bronchial artery and pulmonary vein 22. Alveolar capillary network 23. Anastomosis of the obstructed artery with pulmonary vein 24. Dense capillary network 25. Anastomosis between pulmonary artery and vein
  • Aquarium of the Pacific: Non-Cartilaginous Fishes Footage taken in the Spring of 2009 at the Aquarium of the Pacific (Long Beach, CA). The concentration of this video is on non-cartilaginous Fish (no sharks, rays, skates, etc...) such as Sea Dragons, Sea Horses, Anthias, Damselfishes, and many more varieties. A very difficult to keep specimen is the orange-spotted filefish, found near the end of the video, which appears to look unusually healthy.
  • Stingray Face a short video of a Stingray (Dasyatidae of rays, cartilaginous fishes ) @ The Downtown Aquarium in Denver, CO ** Be sure to watch this video in HD for best viewing! ** HD Vid bY ©buGG (me) April 23rd, 2009
  • Spotted Eagle Ray The spotted eagle ray, Aetobatus narinari, Euphrasen (1790), or bonnet ray, is a cartilaginous fish found in shallow coastal water by coral reefs and bays, in depths down to 80 meters (260 feet). They are members of the eagle ray family, and can be found globally in tropical regions, including the Gulf of Mexico, Hawaii, Atlantic Africa, the Indian Ocean, Oceania, and the Pacific west coast of the Americas. The spotted eagle ray can be identified by its numerous white spots or rings on its blue dorsal surface, white ventral surface, long, whip-like tail, and distinctive head that somewhat resembles a bill. It preys mainly upon bivalves, shrimps, crabs, whelks, and other benthic infauna. The spotted eagle ray's specialized chevron-shaped tooth structure helps it crush the hard shells of mollusks. The largest specimens can grow up to a maximum wingspan of 3 m (10 ft) and a mass of 230 kg (500 pounds). It has a notably long tail in relation to other rays; the total length of a mature ray can reach 5 m. It can have up from 2-6 venomous spines on the tail, however, it does not pose a significant threat as it generally avoids human contact. A. narinari develops ovoviviparously — the eggs hatch internally and feed off a yolk sac prior to birth. As with other rays, spotted eagle rays are vulnerable to large sharks. A great hammerhead shark has been seen attacking a spotted eagle ray in open water by taking a large bite out of one of its pectoral fins. This incapacitated the ray ...
  • Swimmer's Ear Otitis Externa: Inflammation of external auditory c*** or auricle. Infectious, allergic, and dermal disease. Up to 10% of people develop during lifetime. Acute bacterial external otitis most common form seen. Other causes otomycosis, contact dermatitis, necrotizing otitis externa, chronic suppurative otitis media, and external auditory c*** carcinoma Lateral (outer) cartilaginous portion approximately two-thirds of c***, and medial (inner) bony portion other one-third. Outer cartilaginous portion lined by thicker skin with numerous adnexal structures including cerumen glands, sebaceous glands, and hair follicles. Cerumen is formed here: mixture of secretions from cerumen glands, sebaceous glands, and desquamated epithelium. The inner osseous portion contains thin skin without subcutaneous tissue. The dermis direct contact with the underlying periosteum. Minimal inflammation or instrumentation of the bony c*** causes significant pain. The inferior tympanic recess is a small depression in the inferior medial aspect of the ear c***, adjacent to the tympanic membrane. Debris can collect in this area and cause or perpetuate infection.
  • Humanitarian turtle انسانية سلحفاة Turtles are reptiles of the order Testudines (the crown group of the superorder Chelonia), characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield. "Turtle" may either refer to the Testudines as a whole, or to particular Testudines which make up a form taxon that is not monophyletic—see also sea turtle, terrapin, tortoise, and the discussion below. The order Testudines includes both extant (living) and extinct species. The earliest known turtles date from 215 million years ago,[2] making turtles one of the oldest reptile groups and a more ancient group than lizards and snakes. Of the many species alive today some are highly endangered.[3] Like other reptiles, turtles are ectotherms—varying their internal temperature according to the ambient environment, commonly called cold-blooded. However, leatherback sea turtles have noticeably higher body temperature than surrounding water because of their high metabolic rate. Like other amniotes (reptiles, dinosaurs, birds, and mammals), they breathe air and do not lay eggs underwater, although many species live in or around water. The largest turtles are aquatic. sbouya.guelmim.sahara.maroc.morocco
  • Stingray Short clip of a small stingray in the La jolla Cove.
  • Legal Cannabis for 25 Years - Irvin Rosenfeld's Story On Nov.20th,1983, Florida stockbroker Irvin Rosenfeld began recieving 300 joints per month of US government-grown marijuana, under the Investigational New Drugs (IND) program (formed in 1976 when Robert Randall sued the Federal government for access to medical marijuana). As the program was closed to new patients in 1991, Irv is now one of only five legal Cannabis patients in America. Irv has a rare disease called multiple congenital cartilaginous exostoses, which causes extremely painful bone tumors all over his body. Opiate pain relivers and muscle relaxants (to prevent tearing of muscle) were never adaquate, but Medical Cannabis has made it possible for him to lead a normal and productive life. Speaking to the Second Clinical Cannabis Therapeutics Conference in Portland, OR in 2002, Irvin was part of the "Chronic Cannabis Use in the Compassionate IND Program Study", by Dr. Ethan Russo of Missoula, MT, initiated by Patients Out of Time. The "Missoula Study" examined four of the IND patients for any negative effects of long-term marijuana use - something the government refused to do with their own patients and data. View the entire study presentation from the same conference: Other legal patients on the study - Elvy Musikka and George McMahon also told their stories at the conference. View the entire patient panel, chaired by MLMathre, President of Patients Out of Time: Irvin Rosenfeld has called for establishing new protocols for ...
  • AMIC Talus Autologous Matrix Induced Chondrogenesis (AMIC) for the treatment of traumatic cartilage defects. The animation shows the surgical technique for an osteochondral lesion of the talus. The unique technique uses the body's own healing abilities in order to treat focal chondral and osteochondral lesions which are larger than 1-2 cm2. The AMIC technique combines microfracturing with the application of Chondro-Gide, a collagen bilayer matrix. Through microfracturing, multipotent mesenchymal progenitor cells migrate from the subchondral boneinto the defect. The resulting super clot is stabilised by the Chondro-Gide matrix which covers the defect. The natural scaffold of the matrix protects the progenitor cells and stimulates their differentiation to form mostly hyaline-like cartilaginous repair tissue. For more information see www.geistlich-
  • TURTLE LOVE - (Belgrade Zoo) love is in the air :P Sve za ljubav - Beogradski Zooloski Vrt (Vrt Dobre Nade), april 2008. Turtles are reptiles of the Order Testudines (all living turtles belong to the crown group Chelonia), most of whose body is shielded by a special bony or cartilaginous shell developed from their ribs. The Order Testudines includes both extant (living) and extinct species. The earliest known turtles date from 215 million years ago,[1] making turtles one of the oldest reptile groups and a more ancient group than lizards and snakes. About 300 species are alive today, and some are highly endangered. Turtles cannot breathe in water, but they can hold their breath for various periods of time. Like other reptiles, turtles are poikilothermic (or "of varying temperature"[2]). Like other amniotes (reptiles, dinosaurs, birds, and mammals), they breathe air and don't lay eggs underwater, although many species live in or around water. The largest turtles are aquatic.