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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