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• Gills/Breathing.
•     Sharks must keep water circulating through their mouths and into their gills in order to breathe. The gills are located near the pectoral fins, positioned on five to seven vertical arches the form the external gill slits' walls. The heart is located in a chamber underneath the gills, where it pumps the un-oxygenated blood into the capillary beds in the gill slit arches. The water pumped in through the mouth, through the gills, flow in the opposite direction of the blood flow. ... A bottom dwelling species does not get as much oxygen because they do not keep a constant flow of water through their gills. ... Spiracles are external holes that can push water through their gills to keep the oxygen circulating. ... If it weren't for gills, sharks obviously could not be. ...

• Humans and Gills .
• name Shelley age 20s Question - Is it true that some babies are born with some sort of gills? How and when do humans adapt from breathing inside to breathing outside of the womb? ------------------------------------------------ Whoa! You have received a great deal of false information. First, babies are not born with gills! Get that out of your thinking! Babies do not "breath" for oxygen in the womb. ... As for the gills, there is a stage in the early human embryo development whereby humans do show gill slits, but not functional gills. Slits are not gills!! As a matter of fact, all vertebrates show these same gill slits. ...

• Date Prev Date Next Thread Prev Thread Next Date Index Thread Index Subject Index Author Index Re: PROBLEM WITH AMPHIBIAN GILLS.
• Subject: Re: PROBLEM WITH AMPHIBIAN GILLS .
• There are two osteological corellates we can use to infer the presence of gills in fossil amphibians (well temnospondyls at least). ... It was the presence of these coupled with the post-brancial lamina of the cliethrum (which in fish forms the rear wall of the internal gill chamber) that led Coates and Clack (1991) to conclude that the stem tetrapod Acanthostega retained internal gills. ... Trimerorhachis, Dvinosaurus, Plagiosauridae) posses similar ossified ceratobranchials (though they lack the postbranchial lamina so presumably the gills were external). BTW the number of gills appears to have been a primitive four (as in lungfish larvae) rather than the three seen in lissamphibians. ... In short I think the answer to Darren's question is that some early anamniotes (for me amphibian is a dirty word) certainly did have external gills but most probably did not. ... Fish-like gills and breathing in the earliest known tetrapod. ...
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• The gills .
• The gills of a fish are usually made up of filaments, arches and rakers. ...
• Draw a diagram of your fish's gills. ...
• Why are the gills red in colour? .
• Why do the gills have a feather-like appearance? .

• Gills (Ctenidium).
• The gills or ctenidium of geoduck clams are attached on each side of the visceral mass as in other species of clams. ... The apparent double set of gills (see drawing, Fig. ...
• A near transverse histological section through the gills and heart region of a juvenile geoduck clam. ...
• 1a to illustrate the direct connection (large arrow) for haemolymph flow between the heart (h) and gills (g). ...
• In addition to the function of gas exchange during respiration, the gills also trap and transport food particles to the labial palps. ... The gill of adult geoduck clams differs from the gills of juvenile geoduck clams and of other local clam species (Fig. ...
• Transverse sections through the gills of three species of clams. ...
• The water channels (wc) and haemal sinuses (hs) are labeled for orientation and comparison to the gills of geoduck clams. ...
• The size of the gills of the adult geoduck clam is relatively small in comparison to its large body size. ...
• There are fewer muscle fibers and patches of basophilic epithelial cells in the gills of juvenile geoduck clams. The smaller body size and comparatively shorter siphons of the juveniles suggests that the morphology of their gills can be more like that of the littleneck clams. ...
• Interlocking ciliary junctions that hold the gills securely in place within the mantle cavity were observed both in juvenile geoduck clams (Figs. ... Similar ciliary junctions supporting the gills were observed in adult littleneck clams (V. ...
• Histological sections through ciliary junctions in the gills of juvenile geoduck clams. ...
• Note the spatial relationships between the kidney (k), the neural ganglion (ng) and the gills (g). ...

• --> Gills.
• On the cast of the efferent vessels which carry oxygenated blood away from the gills and to the body, identify the EFFERENT BRANCHIAL ARTERY, which is joined by the efferent arteries from the gill filaments. ... The afferent vessels to the gills originate in the heart. ...

• Human gills - Is it true that humans have occasionally been born with gills?.
• No, humans have never been born with gills. ... Yet, newspapers have reported supposed human gills. ...
• "BOY HAD FISH GILLS IN HIS NECK. ...
• The report seemed to directly quote a medical authority as saying that the tissue found in this boy's neck was hard cartilage "exactly the same as found in the gills of fish. ...
• It actually stated that in the first few weeks of life the human fetus "develops six gills. ...
• " In a major textbook on human development we read that "in the human embryo real gills -- branchia -- are never formed. ...
• However, whereas in fish this region develops gills, in humans it forms very important, and quite different, structures in the head and neck region, structures which have nothing to do with gills in either form or function.
• Madeleine Doherty, "Tweed Boy Had Fish Gills in His Neck," The Northern Star (October 30, 1993), p. ...
• Strictly speaking, this sentence is true -- if their son had been a fish, he would have been able to breathe underwater -- because he would then have been designed to do so, with real gills!.
• 3) we reported a respected Melbourne surgeon as saying that the vast majority of fifth-year medical students under his tutelage believe that the embryo does have gills -- although their third-year text (quoted above) makes it plain that this belief is false.
• It had nothing to do with the functional opening in real gills.
• Does the human fetus temporarily develop gills, a tail, and a yolk sac?.

• gills).
• partial gills), serrate .
• Gills are those soft, thin, flexible blade-shaped ridges on the bottom of a "normal" mushroom cap. ...
• I do not consider those gills, as they are too hard and usually too thick and blunt. ...
• Even when these folds are quite deep, most fungal authors are reluctant to call them gills, as their edges are blunt (having your " gill" come to a nice point like a knife blade seems to be an important part of the concept). In most other writings, however, lamella is considered a more "precise", "scientific" term for gills. ...
• Lentinellus species are supposed to have serrated gills, but these are so irregular they can be said to be eroded. ...
• Gills that are smoothly wavy at their margin are said to be sinuate. ...

• Seahorses_Forever gills.
• i know seahorses have gills,but a friend of mine who has been breeding,not keeping seahorses for 20 yrs,freaked out when i told him i have live sand,my only motivation about mentioning live sand was that for people not to make the same mistakes as me. ...
• Seahorses_Forever gills ctenpenny .
• Re: Seahorses_Forever gills JennM .
• Re: Seahorses_Forever gills Susan Cooper .
• Re: Seahorses_Forever gills John A Ranno Jr .
• Re: Seahorses_Forever gills Susan Cooper .
• Re: Seahorses_Forever gills JennM .

• LOWER RIGHT: Gills of the dorid nudibranch Platydoris showing the anal papillae (arrow) intimately connected.
• LOWER LEFT: Part of the left side of the phyllidiid Phyllidia ocellata showing the secondary gills (arrow). ...
• In simple terms, the primitive gastropod snail has twisted its body so that the posterior end, with the anus, reproductive openings, kidney openings and gills, comes to sit above the head facing forwards. ... Torsion, or twisting, often lead to an assymetry in the mantle cavity organs, the loss of one of a set of paired gills being one of the most obvious examples. ...
• Another group of sea slugs, the notaspideans (pleurobranchs etc), are also called the “side-gilled” slugs because their gills stopped on the right side of the body during their evolution. ...
• Some gills in nudibranchs are clearly not the original gills but are secondary structures. In Phyllidia there are secondary gills along each side of the body between the mantle edge and the foot. ...
• LOWER RIGHT: Gills of the dorid nudibranch Platydoris showing the anal papillae (arrow) intimately connected.
• LOWER LEFT: Part of the left side of the phyllidiid Phyllidia ocellata showing the secondary gills (arrow). ...
• Torsion & nudibranch gills.

• Welcome To Gills.
• Gills swim fins that will change your way of diving, swimming and snorkelling forever. The revolutionary and far advanced design of Gills's new fins is a radical departure from just about all present conceptions about diving fins. ...
• New design fin from GILLS - the NewFLOE.
• "The Gills fin products are far removed from merely a cosmetic change it is more like the neogenesis of diving fins. ...
• Gills is offering a free sample of the polycarbonate material to potential clients. ...
• Gills Design Group.

• homeaboutcontactarchivesrandom articlesearchsyndication xml Aquaman Cannot Marry a Woman Without Gills; They Come from Different Worlds November 3rd, 2004 WASHINGTON, DC -- Observers are growing increasingly concerned with the marriage of Aquaman announced Wednesday. ...

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