What is the location of the receptors that are stimulated by a large drop in the blood PO₂ level?
A) respiratory centre of the brain
B) carotid and aortic bodies
C) tissue capillaries
D) Arterioles

Question

Quizplus · Accepted Answer

The carotid and aortic bodies, located in the walls of the carotid arteries and aorta, respectively, contain specialized cells called chemoreceptors that respond to changes in blood oxygen levels. When there is a decrease in blood PO₂ level, these chemoreceptors send signals to the respiratory center of the brain, leading to an increase in breathing rate and depth. Tissue capillaries and arterioles do not contain receptors that specifically respond to changes in blood oxygen levels.

What Is the Location of the Receptors That Are Stimulated