The breathing rate is controlled by chemoreceptors that detect
A) levels of oxygen in the alveolar air space.
B) levels of oxygen in the blood.
C) levels of carbon dioxide in the alveolar air space.
D) levels of carbon dioxide in the blood.
E) level of stretching of the rib muscles and diaphragm.

Question

Quizplus · Accepted Answer

Chemoreceptors in the carotid artery and aorta detect changes in the levels of carbon dioxide in the blood, which leads to changes in breathing rate.

The Breathing Rate Is Controlled by Chemoreceptors That Detect