Which of the following processes is not a true component of swallowing?

A. Closure of the glottis.

B. Involuntary relaxation of the upper esophageal sphincter.

C. Movements of the tongue against the palate.

D. Esophageal peristalsis.

Correct Answer: Movements of the tongue against the palate.

Description: The movement of the tongue against the palate is the only voluntary process among the four possible answers

Category: Physiology

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