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Which cranial nerve controls the neck muscles?

  1. Vagus nerve

  2. Hypoglossal nerve

  3. Accessory nerve

  4. Facial nerve

The correct answer is: Accessory nerve

The accessory nerve (C) controls the neck muscles specifically. The vagus nerve (A) does not directly affect the neck muscles but rather controls various muscles and organs in the thorax and abdomen. The hypoglossal nerve (B) controls the muscles of the tongue and has no direct impact on the neck muscles. The facial nerve (D) controls the muscles of the face, not the neck muscles.