Blocking afferent action potentials from the chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing in response to
A) changes in PCO2.
B) changes in PO2.
C) changes in pH.
D) changes in blood pressure.
E) changes in PCO2, PO2, and pH.

Question

Quizplus · Accepted Answer

The chemoreceptors in the carotid and aortic bodies detect changes in PCO2, PO2, and pH in the blood and these signals are important in regulating breathing. Blocking the afferent action potentials from these chemoreceptors would interfere with the brain's ability to respond to all three of these factors, leading to breathing difficulties and potentially respiratory failure. Therefore, the correct choice is E.

Blocking Afferent Action Potentials from the Chemoreceptors in the Carotid