HUMAN PHYSIOLOGY
DIGESTION AND ABSORPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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no emulsification of fat takes place in stomach
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the gastric juice is highly acidic
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pH of gastric juice is not conducive for its action
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the enzyme is secreted in small quantity
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the concentration of f bile salt is high in gastric juice
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Detailed explanation-1: -The digestive enzymes (such as amylase, lipase, and trypsin) are released from the cells of the acini and flow into the pancreatic duct. The pancreatic duct joins the common bile duct at the ampulla of Vater, where both flow into the duodenum. The enzymes are normally secreted in an inactive form.
Detailed explanation-2: -Hence, the Gastric gland never secrets even a small amount of lipase is a false statement.
Detailed explanation-3: -In humans, lipase is present in the serous (von Ebner) glands of the tongue, where it is localized in zymogen granules. In the stomach, the highest lipase activity is in the body. By immunocytochemistry, gastric lipase is confined to the chief cells of the fundic mucosa and is colocalized with pepsin.
Detailed explanation-4: -Gastric lipase hydrolyzes the ester bonds of triglycerides in the stomach. Fatty acids and diacylglycerols are produced from this reaction. The long chain free fatty acids have the ability to prevent gastric lipase from hydrolyzing more triglycerides.