July 23, 2012

Concerning receptors and innervation

Which receptor is innervated by nerves that combine with the vagus nerve?

a) Carotid sinus receptors
b) Aortic arch receptors
c) Central chemoreceptors
d) Pulmonary artery receptors
e) Atrial receptors






ANSWER
The correct answer is B


Explanation
The aortic arch baroreceptors are innervated by the aortic nerve, which then combines with the vagus nerve (X cranial nerve) traveling to the brainstem (see figure below); bilateral vagotomy, therefore, denervates the aortic arch baroreceptors.


No comments:

Post a Comment

Got something to say? We appreciate your comments: