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Respiration in Non-Homeotherms - Anatomy & Physiology (view source)
Revision as of 10:49, 15 August 2008
, 10:49, 15 August 2008→Fish
===Gills===
===Gills===
Gills are in the walls of both sides of the pharynx and are composed of filaments which increase the surface area.
When a fish breaths, it takes in water into the mouth, which is then forced out through the gills.
A '''Countercurrent Exchange''' system is in place within the gills to make gaseous exchange more efficient.
==Amphibia==
==Amphibia==