The cranial nerve that innervates the larynx and also innervates the levator veli palatini, palatoglossus, and palatopharyngeal muscle is

GENERAL PHYSIOLOGY

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	CN X, the vagus nerve
B	CN V, the trigeminal nerve
C	CN XI, the spinal accessory nerve
D	CN VII, the facial nerve

Explanation:

Detailed explanation-1: -The vagus nerve arises from the fourth branchial arch; this arch is also responsible for the development of the pharyngeal and laryngeal muscles, the laryngeal cartilages, the aortic arch, and subclavian artery.

Detailed explanation-2: -The vagus nerve is the 10th cranial nerve and is responsible for supplying the entire larynx with its complex innervation through the different nerves and respective branches discussed in this article.

Detailed explanation-3: -Functions. The vagus nerve has a very extensive distribution. Sensory: Innervates the skin of the external acoustic meatus and the internal surfaces of the laryngopharynx and larynx. Provides visceral sensation to the heart and abdominal viscera.

Detailed explanation-4: -The vagus nerve, or CN X, provides motor innervation to the pharynx, larynx, palate, and striated muscles of the esophagus by the recurrent laryngeal nerve.

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