In the normal drive to breathe,chemoreceptors are stimulated by:
A) diffusion.
B) low carbon dioxide.
C) high oxygen.
D) high carbon dioxide.

Question

Quizplus · Accepted Answer

Chemosensors are more sensitive to the concentration of CO2 in the body than the concentration of oxygen. Hence high carbon dioxide levels in the body stimulate chemoreceptors to increase the breathing rate to get rid of excess carbon dioxide via exhalation.

In the Normal Drive to Breathe,chemoreceptors Are Stimulated By