Why is the gastroesophageal sphincter normally closed
A) to prevent air from entering the oesophagus during breathing
B) to prevent gastric contents from refluxing into the oesophagus
C) to prevent vomiting
D) to prevent oesophageal secretions leaking into the stomach
Correct Answer:
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Q20: Which statement describes mixing movements
A)They promote digestion
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Q22: Which of these statements does NOT describe
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
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