Removal of proximal segments of the small intestine would most likely result in a decrease in which of the following? A. Basal acid output B. Gastric emptying of liquids C. Gastric emptying of solids D. Pancreatic enzyme secretion
D
The removal of proximal segments of the small intestine (specifically the duodenum and jejunum) would result in a decrease in pancreatic enzyme secretion, which is option D.
The duodenum and jejunum are important sites for the release of hormones that stimulate pancreatic enzyme secretion, such as secretin and cholecystokinin (CCK). These hormones are released in response to the presence of food in the small intestine. Without these segments, these hormones would not be able to stimulate pancreatic enzyme secretion, leading to a decrease in digestion and absorption of nutrients.
Basal acid output (option A) is regulated by the parietal cells in the stomach and is not directly affected by the removal of segments of the small intestine.
Gastric emptying of liquids (option B) and solids (option C) is primarily regulated by the pyloric sphincter, which controls the release of chyme (partially digested food) from the stomach into the small intestine. The removal of segments of the small intestine would not directly affect the function of the pyloric sphincter or gastric emptying.
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