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What Causes the Gastroesophageal Sphincter to Open to Allow Food

Question 21

Multiple Choice

What causes the gastroesophageal sphincter to open to allow food to enter the stomach?


A) the arrival of the peristaltic wave at the stomach
B) the relaxation of the gastroesophageal sphincter associated with chewing of food
C) activity of the tongue in swallowing
D) the pressure of food against the gastroesophageal sphincter

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