Question

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 all EXCEPT which of the following?

Group of answer choices

changes in PCO2

changes in PO2

changes in pH due to carbon dioxide levels

changes in blood pressure

Answer 1

Option 'd' (Changes in blood pressure) is correct

Justification: Blocking afferent action potentials from chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing is not related to the changes in blood pressure.

Justification for other options:

• Options 'a', 'b' and 'c' are true about the given statement because peripheral chemoreceptors in regulating breathing interfere with the changes in the partial pressure of oxygen (po2), partial pressure of carbon dioxide (pco2), and in pH due to carbon dioxide levels.

Thank you!