Biology 2601A/B Lecture Notes - Lecture 16: Hemocyanin, Bohr Effect, Priapulida
18 Dec 2015
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Document Summary
We tidally fill our lungs with oxygen, fish are directional. The branchial breathing system in teleost (bony- more modern fish) & elasmobranches (sharks and rays, cartilidge type fish) Elasmobranches expand the volume of buccal cavity. Fish also has a spiracle, but not shown in the picture. Fish open their mouths, and as it opens their mouths it drops its buccal cavity and that creates a suction pump sucking water in. When it closes its mouth it closes water in overtop of its gills. It has these gill arches water pushes through the 4 chambers and leaves the animal as it passes over the gills it will extract the oxygen. Teleost opercular cavity is covered by the oberculum (like a plate) and this creates another pump area this system is well timed so that it is continuous with the flow of water and uni-directional. The branchial breathing system in teleost and elasmobranches.
