Digestion and AbsorptionHard
Question
Most of the fat digestion occrs in
Options
A.rectum
B.stomach
C.duodenum
D.small intestine
Solution
Gastric juice of gastric glands f stomach has no fat emulsifying enzyme but has a weak gastric lipase which hydrolyse a small amount of fats.
Fats are finally emulsified in small intestine by the detergrnt action of bile salts.Emulsification of fat converts large fat droplets into large number of smal droplets, which provide larger surface area to lipases. Then pancreatic lipase (steapsin) which is principal fat digesting enzyme, digest about 2/3td of fats in stages. Then intestinal lipase hydrolyses some tri, di and monoglycerides to fatty acids and glycerol molecules.
Fats are finally emulsified in small intestine by the detergrnt action of bile salts.Emulsification of fat converts large fat droplets into large number of smal droplets, which provide larger surface area to lipases. Then pancreatic lipase (steapsin) which is principal fat digesting enzyme, digest about 2/3td of fats in stages. Then intestinal lipase hydrolyses some tri, di and monoglycerides to fatty acids and glycerol molecules.
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