BIO202H5 Lecture Notes - Lecture 6: Buccal Pumping, Anabantoidei, Anterior Chamber Of Eyeball
Document Summary
The (cid:271)u(cid:272)(cid:272)al pu(cid:373)p relies o(cid:374) boyle"s law (whe(cid:374) you i(cid:374)(cid:272)rease volume in a given chamber, you decrease pressure. Movement of water from buccal chamber to opercular chamber by controlling valve (opercular) opening and closing. Buccal pump, have mouth open, water comes into buccal cavity, mouth closes. Chamber becomes compressed and water moves into the opercular cavity which also compresses upon which the opercular openings open and water passes through. Build pressure in a chamber, open up a valve, need to move this to an area where there is low pressure. They have an accessory respiratory structure (labyrinth organ) to obtain oxygen on land and deliver it to the body (gills would collapse on land) The first solution to living more on land was air gulping. Air gulping (vertebrates) or spiracular breathing (non- vertebrates) Air is not absorbed; air moves from outside the animal into the buccal cavity.
