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12 Questions

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Fat Digestion Process

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Questions and Answers

Where does most of the triglyceride (TG) hydrolysis occur?

Small intestine (correct)

Large intestine

Stomach

Gallbladder

What is the major fat-digesting enzyme involved in TG hydrolysis?

Intestinal amylase

Pepsin

Trypsin

Pancreatic lipase (correct)

What are the products formed after the hydrolysis of TGs by pancreatic lipase?

Monoglycerides and two fatty acids (correct)

Diglycerides and fatty acids

Glycerol and monoglycerides

Glycerol and fatty acids

How are lipids absorbed into the intestinal cells?

Small molecules diffuse directly, while large molecules form micelles Signup and view all the answers

What are the transport vehicles that carry lipids from the intestinal cells to the rest of the body?

Chylomicrons Signup and view all the answers

How do chylomicrons enter the bloodstream?

Through the thoracic duct near the heart Signup and view all the answers

What is the main role of lingual lipase in adults?

It plays a minor role in fat digestion in adults. Signup and view all the answers

What is the role of cholecystokinin (CCK) hormone in lipid digestion?

CCK signals the gallbladder to release its storage of bile. Signup and view all the answers

What is the main function of bile acids in lipid digestion?

Bile acids act as emulsifiers, drawing fat molecules into the watery fluids. Signup and view all the answers

Where does the majority of fat digestion take place?

In the small intestine, due to the action of pancreatic and intestinal lipases. Signup and view all the answers

What is the main challenge the body faces in digesting and absorbing lipids?

Lipids are hydrophobic, and tend to separate from the watery fluids of the GI tract. Signup and view all the answers

What is the approximate amount of triglycerides, phospholipids, and cholesterol received by the GI tract every day?

50-100 g of triglycerides, 4-8 g of phospholipids, and 200-350 mg of cholesterol. Signup and view all the answers