The pharyngoesophageal sphincter is normally closed to prevent
A) air from entering the esophagus during breathing
B) gastric contents from refluxing back into the esophagus
C) vomiting
D) esophageal secretions from leaking into the stomach
E) food from entering the pharynx
Correct Answer:
Verified
Q23: Secondary peristaltic waves in the esophagus occur
A)when
Q24: If peristalsis in the esophagus is insufficient
Q25: Chewing
A)grinds and breaks up food
B)mixes food with
Q26: Gastric mixing is
A)primarily in the body of
Q27: The gastroesophageal sphincter is normally closed to
Q29: What helps prevent food from entering the
Q30: Salivary secretion is
A)entirely under neural control (i.e.,
Q31: What prevents food from entering the nasal
Q32: Swallowing is
A)the movement of the bolus from
Q33: Which of the following is not a
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