add stability to phospholipid bilayer

a detergenlike compounds that function in the process of lipid digestion and absorption

serves as precursor of bile salts

low level of cholesterol indicate atherosclerosis

serves as precursor of steroid hormones

types of lipids

Vitamins B and C

decreased in fat-soluble vitamins lead to beri beri, scurvy

Vitamin A, D, E, K

involved in blood clotting

types of lipids

Vitamins B and C

decreased in fat-soluble vitamins lead to beri beri, scurvy

Vitamin A, D, E, K

involved in blood clotting

Digested in the lumen of the intestines

Contain chylomicrons and VLDL

Initial digestive products are free fatty acids and 2-monoacylglycerols

Stored in the adipose tissues

Converted to acetyl CoA

Carry tricylglycerols in blood

Produced in intestinal epithelial cells

No intake of chylomicrons from dietary fat

Produced in liver

Serve as major blood lipoprotein

Mainly from dietary carbohydrates

Mainly from dietary lipids

Carries tricylglycerols in blood

Produced in liver

Remnant of LDL

Endocytosed by the liver

Produced in blood

Produced before tricylglycerols digestion

Remnant of VLDL

End product of VLDL

Contain high concentration of cholesterol and cholesterol esters

Initial product of VLDL

Produced in the blood

Remnant of IDL

Produced after tricylglycerols absorption

Functions in the return of cholesterol from peripheral tissues to the liver

Remnant of LDL

Produced in the liver and intestine

Good cholesterol

Bad cholesterol

Fatty acids and glycerol released form adipose tissues

Glycerol travels to liver for gluconeogenesis

ATP is generated by oxidation of fatty acids to CO2

Liver converts ketone bodies to carbon

During prolonged starvation, ketone bodies are reduced for energy in the brain