ZOO 3210 Study Guide - Final Guide: Myoglobin, Partial Pressure, Hemoglobin

• School: University of Guelph
• Department: Zoology
• Course: ZOO 3210
• Professor: Jim Ballantyne

Document Summary

Avian lung: more interested in basic functionality of sacs rather than the number of sacs that birds have, they have a trachea that leads into the sac. Avian lung cross current gas exchange: cross current gas exchange is a third mode of o2 transfer from the environmental medium to the blood when ventilation is unidirectional, diagram. The afferent blood vessel breaks up into smaller vessels, each of which makes exchange contact with just a limited part of the structure through which the medium is flowing. The smaller vessels then converge to form a single efferent vessel: parabronchi and air capillaries: the gas exchange sites in avian lungs. Unidirectional airflow in the lungs of alligators: present in their nondinosaur descendants, as well as in dinosaurs, prediction that alligators may be an ancestor of the avian lung. What else do we need to know: how do the 2 convective flows relate, i. e.