The time available for diffusion in the lung is mainly a function of which of the following?

Question

Quizplus · Accepted Answer

The time available for diffusion in the lung (also known as diffusion capacity) is mainly dependent on the rate of pulmonary blood flow. The more blood flow through the lungs, the less time each unit of blood has to undergo gas exchange, thereby reducing diffusion capacity. Factors such as functional residual capacity, inspired oxygen concentration, and level of V_A do not directly affect diffusion capacity.

The Time Available for Diffusion in the Lung Is Mainly