For gas exchange to be efficient, the respiratory membrane must be .
A) 0.5 to 1 micrometer thick
B) between 5 and 6 micrometers thick
C) The thickness of the respiratory membrane is not important in the efficiency of gas exchange.
D) at least 3 micrometers thick

Question

Quizplus · Accepted Answer

The respiratory membrane must be thin (0.5 to 1 micrometer thick) to allow efficient diffusion of gases like oxygen and carbon dioxide between the alveoli and the blood.

For Gas Exchange to Be Efficient, the Respiratory Membrane Must