Air flow through bird lungs is a continuous circuit,flowing in one direction only.

Question

Quizplus · Accepted Answer

This is true. Air flow through bird lungs is unidirectional, flowing in one direction only. This is because birds possess a unique respiratory system which involves air sacs along with their lungs. The air flow is directly from the posterior air sacs to the lungs, and then to the anterior air sacs and out of the body. This design allows for a more efficient exchange of gases in the lungs and makes it possible for birds to obtain the oxygen they require for their high metabolic demands during flight.

Air Flow Through Bird Lungs Is a Continuous Circuit,flowing in One