Lipid Metabolism

Front

Where does lipid digestion begin?

Back

In the duodenum.

Front

What substances are secreted from the gallbladder during lipid digestion?

Back

Bile acids and bile salts.

Front

What enzyme is secreted by the pancreas for lipid digestion?

Back

Lipase.

Front

What is the role of bile salts in lipid digestion?

Back

They emulsify the lipids, activating lipase.

Front

What are the products of triglyceride hydrolysis?

Back

Glycerol and fatty acids.

Front

What is absorbed at the end of the small intestine?

Back

Hydrolysis products of lipids.

Front

How are larger lipid products processed after absorption?

Back

They enter intestinal epithelial cells, are re-synthesized into triglycerides, cholesterol esters, and phospholipid esters, and are then encapsulated in lipoproteins.

Front

What are the four types of lipoproteins involved in lipid transport?

Back

Chylomicron, Very Low-Density Lipoprotein (VLDL), Low-Density Lipoprotein (LDL), High-Density Lipoprotein (HDL).

Front

What is the primary function of chylomicrons?

Back

To transport exogenous lipids (from food), mainly triglycerides.

Front

What happens to triglycerides in cells?

Back

They are broken down into glycerol and fatty acids.