Each of the following factors affects the rate of external respiration, except the A) thickness of the respiratory membrane. B) PO2 of the alveoli. C) diameter of an alveolus. D) solubility of oxygen in plasma. E) PCO2 of the blood.

Question

Quizplus · Accepted Answer

The diameter of an alveolus does not directly affect the rate of external respiration. External respiration is primarily influenced by factors like the thickness of the respiratory membrane, partial pressures of gases (PO2 and PCO2), and the solubility of gases in blood.

Each of the Following Factors Affects the Rate of External