Which of the following helps determine the amount of oxygen that diffuses into the blood each minute?
A) The total functional surface area of the respiratory membrane
B) Alveolar ventilation
C) The oxygen pressure gradient between alveolar air and incoming pulmonary blood
D) All of the above help determine the amount of oxygen that diffuses into the blood each minute.

Question

Quizplus · Accepted Answer

All of the choices listed (total functional surface area, alveolar ventilation, and oxygen pressure gradient) play a role in determining the amount of oxygen that diffuses into the blood each minute. The surface area of the respiratory membrane determines the total area available for gas exchange, while alveolar ventilation affects the concentration of oxygen in the alveolar air. The oxygen pressure gradient between the alveolar air and pulmonary blood determines the direction and rate of diffusion of oxygen across the respiratory membrane.

Which of the Following Helps Determine the Amount of Oxygen