6Lipids in the Body

6Lipids in the Body - Enterohepatic circulation(circulation...

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Enterohepatic circulation (circulation of bile from the liver) Gallbladder stores bile small intestine-bile emulsifies fats liver-cholesterol used to generate bile colon-bile trapped by fiber and lost in feces Bile is reabsorbed into blood. I. Lipids in the body A. Chylomicrons (large beach ball of fat) 1. Beach ball 2. Deliver triglycerides a. Lipoprotein lipase – enzyme on cells that eat away at the large chylomicron B. Very Low Density Lipoprotein (VLDL) – about the size of a softball… C. Intermediate Density Lipoprotein (IDL) D. Low Density Lipoprotein (LDL) 1. Golf ball 2. Bad cholesterol 3. Deliver cholesterol E. High Density Lipoprotein (HDL) 1. Steel ball bearing (“good cholesterol”) 2. Scavenges free cholesterol in the blood stream (and takes it back to the liver) F. Fat may be: 1. Used immediately for energy 2. Used to make lipid containing compounds 3. Stored in muscle or adipose tissue a. Adipocytes – cells that store fat G. What to eat?? (From the dietary point of view) 1. Acceptable Macronutrient Distribution Range) – approximately 30% of calories from fat. (Refers to the total number of calories should be from protein, fat.) 2.
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