PHYSIOLOGY
GASTROINTESTINAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is peristalsis?
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When a food is present in the intestine, the intestinal nervous system promotes a type of motility.
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It is a reflex response triggered by afferent impulses from the trigeminal, glossopharyngeal, and vagus nerves.
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It is a reflex response that begins when the intestinal wall is stretched by the luminal content, and it occurs in all segments of the digestive tract from the esophagus to the rectum.
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None of the above
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Explanation:
Detailed explanation-1: -Peristalsis is the downward wave-like movements of smooth muscles of the GI tracts that propels food bolus from mouth to GI tract. Antiperistalsis is the upward or backward wave-like movements of smooth muscle that propels food from stomach to mouth against the normal process.
Detailed explanation-2: -As a result, peristalsis is a natural and essential mechanism for moving food through the digestive tract. The contractions take the shape of rising wavelike contractions in the oesophagus, intestines, and stomach. It’s the mechanism that transports food and fluids through the digestive system.
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