Multiple Choice
The rate of gas exchange in mammals is maximized by
A) an exceedingly high partial pressure of O2 in the blood.
B) the opening of the larynx (voice box) into the trachea.
C) an enormous surface area for gas exchange.
D) the relatively small increase in size of the thoracic cavity during inhalation.
E) the use of mucus as a surfactant.
Correct Answer:

Verified
Correct Answer:
Verified
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