The movement of air along parabronchi is most similar to the movement of
A) air in the lungs of other amniotes.
B) food/waste in a gastrovascular cavity.
C) food/waste in a digestive system with separate mouth and anus.
D) the frog tongue during feeding.
E) air in lungs of terrestrial amphibians.

Question

Quizplus · Accepted Answer

The movement of air along parabronchi in bird lungs is unidirectional, which is most similar to the unidirectional movement of food and waste in a digestive system with a separate mouth and anus. This contrasts with the bidirectional movement of air in the lungs of other amniotes (like mammals) and the different mechanisms of gas exchange in amphibians or the action of a frog's tongue during feeding.

The Movement of Air Along Parabronchi Is Most Similar to the Movement