Which of the following is NOT a function of the vagus nerve in the neck? A) Motor to the cricothyroid muscle B) Motor to the muscles of the larynx C) Sensory to the upper part of l... Which of the following is NOT a function of the vagus nerve in the neck? A) Motor to the cricothyroid muscle B) Motor to the muscles of the larynx C) Sensory to the upper part of larynx D) Parasympathetic fibers to the heart
Understand the Problem
The question is asking to identify which of the listed options is not a function of the vagus nerve in the neck. We need to analyze each option to determine if it is indeed a function of the vagus nerve.
Answer
Motor to the cricothyroid muscle.
The correct answer is Motor to the cricothyroid muscle.
Answer for screen readers
The correct answer is Motor to the cricothyroid muscle.
More Information
The cricothyroid muscle receives motor innervation from the external branch of the superior laryngeal nerve, not the vagus nerve directly.
Tips
A common mistake is confusion between the vagus nerve and its branches, which may innervate certain muscles through other nerves.
Sources
- Disorders of Cranial Nerves IX and X - PMC - pmc.ncbi.nlm.nih.gov
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