Which nerves innervate the carotid sinus and carotid body?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Discover high-yield NBME Gross Anatomy concepts with quizzes designed to enhance your understanding. Equip yourself with flashcards, multiple-choice questions, and detailed explanations. Prepare effectively for your anatomy exam!

Multiple Choice

Which nerves innervate the carotid sinus and carotid body?

Explanation:
Carotid sinus and carotid body afferents are carried mainly by the glossopharyngeal nerve, with additional input from the vagus nerve. The glossopharyngeal nerve travels via the carotid sinus nerve (nerve of Hering) to the nucleus tractus solitarius in the brainstem, delivering sensory information about blood pressure (from the sinus) and chemical status (from the body). The vagus nerve also provides some sensory fibers to these receptors, supplementing the signal to the brain. This combination explains why both cranial nerves IX and X innervate the carotid sinus and carotid body, while other nerves (like VII) do not.

Carotid sinus and carotid body afferents are carried mainly by the glossopharyngeal nerve, with additional input from the vagus nerve. The glossopharyngeal nerve travels via the carotid sinus nerve (nerve of Hering) to the nucleus tractus solitarius in the brainstem, delivering sensory information about blood pressure (from the sinus) and chemical status (from the body). The vagus nerve also provides some sensory fibers to these receptors, supplementing the signal to the brain. This combination explains why both cranial nerves IX and X innervate the carotid sinus and carotid body, while other nerves (like VII) do not.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy