HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pancreatic lipase work to degrade TG into FA + monoacylglycerols
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Colipase slow down the action of pancreatic lipase
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It is not a major site for fat digestion
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Secretion of pancreatic juice is stimulated by secretin, CCK and gastric acid
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cholesterol esterase breaks phospholipid into FFA and lysophospholipids
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Detailed explanation-1: -Secretin stimulates the flow of bile from the liver to the gallbladder. CCK stimulates the gallbladder to contract, causing bile to be secreted into the duodenum, as shown below.
Detailed explanation-2: -Cholecystokinin (CCK) is a major gastrointestinal hormone that plays an important role in stimulation of pancreatic secretion and gall-bladder contraction, regulation of gastrointestinal motility and induction of satiety.
Detailed explanation-3: -CCK cells are concentrated in the proximal small intestine, and hormone is secreted into the blood upon the ingestion of food. The physiological actions of CCK include stimulation of pancreatic secretion and gallbladder contraction, regulation of gastric emptying, and induction of satiety.
Detailed explanation-4: -CCK stimulates theflow of bile into the duodenum by causing the gallbladder to contract and the sphincter of Oddi to relax (seepp. 961–962). CCK also stimulates thesecretion of pancreatic enzymes, including lipases and esterases (seepp. 882–883).