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The contraction during peristalsis is caused by the activation of neurons by the local plexus that release what?
Substance P and ACh
The relaxation during peristalsis is caused by the activation of neurons that release what?
NO, VIP, and ATP
The small intestine is protected by the action of hydrochloric acid in chyme by ______ which is ducted in by the pancreas.
bicarbonate rich fluid
It is stimulated by the presence of acid in the small intestine and stimulates bicarbonate release from the pancreas and bile ducts.
It is stimulated by glucose and fat in the small intestine and increases insulin and amplifies the insulin responses to glucose.
It is stimulated by amino acids and fatty acids in the small intestine and stimulates pancreatic enzyme secretion.
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