There are actually two gas exchange events: one occurs in the lung and the other occurs when the blood is in a capillary surrounded by active cells.Which statement best summarizes this second exchange?
A) Oxygen diffuses out of the alveoli while carbon dioxide diffuses into the alveoli.
B) Oxygen diffuses into the blood plasma while carbon dioxide diffuses out of the blood plasma.
C) Oxygen diffuses into the alveoli while carbon dioxide diffuses out of the alveoli.
D) Oxygen diffuses out of the blood plasma while carbon dioxide diffuses into the blood plasma.

Question

Quizplus · Accepted Answer

The second gas exchange event occurs at the systemic capillaries, where oxygen diffuses out of the blood and into the tissues, while carbon dioxide diffuses from the tissues into the blood.

There Are Actually Two Gas Exchange Events: One Occurs in the Lung