The close proximity of capillaries to the alveoli in lungs improve respiratory efficiency by ________.
A)decreasing the distance for diffusion
B)increasing the surface area for diffusion
C)increasing the concentration difference
D)changing the diffusion constant

Question

Quizplus · Accepted Answer

The close proximity of capillaries to the alveoli decreases the distance for diffusion, allowing gases to be exchanged more efficiently between the air in the alveoli and the blood in the capillaries.

The Close Proximity of Capillaries to the Alveoli in Lungs