Physiology 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. 💡 Explanation Which of the following processes is not a true component of swallowing? ✓ Correct Answer: C. Movements of the tongue against the palate.