All intrinsic laryngeal muscles except cricothyroid are innervated by which nerve?

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Multiple Choice

All intrinsic laryngeal muscles except cricothyroid are innervated by which nerve?

Explanation:
The key idea is that the intrinsic laryngeal muscles (those that move the vocal cords) are all powered by the recurrent laryngeal nerve, a branch of the vagus, except for one muscle. The cricothyroid muscle is activated by the external branch of the superior laryngeal nerve, not by the recurrent laryngeal nerve. So, among the nerves listed, the recurrent laryngeal nerve supplies all intrinsic laryngeal muscles except the cricothyroid, making it the correct answer.

The key idea is that the intrinsic laryngeal muscles (those that move the vocal cords) are all powered by the recurrent laryngeal nerve, a branch of the vagus, except for one muscle. The cricothyroid muscle is activated by the external branch of the superior laryngeal nerve, not by the recurrent laryngeal nerve. So, among the nerves listed, the recurrent laryngeal nerve supplies all intrinsic laryngeal muscles except the cricothyroid, making it the correct answer.

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