Which of the following reflexes speeds-up (enhances) the movement of material along the GI tract? (in...

Which of the following reflexes speeds-up (enhances) the movement of material along the GI tract? (in the direction of the rectum or “downstream”)

Group of answer choices

A. Gastroileal reflex

B. Gastrocolic reflex

C. Enterogastric reflex

A and B

A, B, and C

Solutions

Expert Solution

Gastroileal reflex is one of the gastrointestinal reflex where the presence of food in stomach and gastric peristalsis causes reflex opening of ileocecal valve resulting in emptying of contents of ileum into the large intestine. Once the food reaches large intestine, it causes contraction in large intestine resulting in urge to defecate.
Gastrocolic reflex is stimulated in response to presence of food in stomach and small intestine. It causes increase in mass movement of the food in large intestine resulting in urge to defecate.
enterogastric reflex is stimulated through acidic ph of stomach and duodenum and duodenal distension. This results in reflex inhibition of gastrin cells of stomach producing acid and gastric motility.
Thus gastroileal and gastrocolic reflex increases the gut motility and this enhances movement of material along the GIT.
Enterogastric reflex causes inhibition of gut motility.
So the answer is A and B

Sydney Mullin answered 10 months ago

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