The alveoli of the lungs do not contain "air" because: – McqOptions

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1.	The alveoli of the lungs do not contain "air" because:
A.	We normally do not ventilate our lungs at a high enough rate.
B.	The lungs have too many alveoli to ventilate.
C.	There is "dead space" in the trachea and bronchi.
D.	The trachea and bronchi are too small in volume.
Answer» D. The trachea and bronchi are too small in volume.

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