What is the primary function of the lungs?
a. Convert angiotensin I to angiotensin II.
b. Filter pulmonary blood.
c. Gas exchange.
d. Remove carbon monoxide (CO).
ANS: C
The primary functions of the lungs are to supply the body with oxygen (O2) and to remove car-bon dioxide (CO2).
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What is the primary function of leukocytes?
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