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In the Respiratory Cycle of Birds, Air Flows Through the Trachea

Question 43

Multiple Choice

In the respiratory cycle of birds, air flows through the trachea, to the bronchi, and then

A) into the parabronchi.
B) back through the trachea.
C) to the air capillaries.
D) into the posterior air sacs.
E) into the anterior air sacs.

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