Why is the pharyngoesophageal sphincter normally closed
A) to prevent air from entering the oesophagus during breathing
B) to prevent gastric contents from refluxing back into the oesophagus
C) to prevent vomiting
D) to prevent oesophageal secretions from leaking into the stomach
Correct Answer:
Verified
Q24: Where is the pyloric sphincter located
A)between the
Q25: Receptive relaxation refers to which of the
Q26: Where is the swallowing centre located
A)cerebral cortex
B)medulla
Q27: Which of these factors is the most
Q28: What prevents food from entering the trachea
Q30: Which of these statements does NOT apply
Q31: Which of these statements does NOT pertain
Q32: Which of the following factors does NOT
Q33: If peristalsis in the oesophagus is insufficient
Q34: Which of these factors will NOT influence
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