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LIPIDS

LIPIDS. Part II: Digestion, Absorption, Transportation & Metabolism. Digestion of Triglycerides. Goal: Triglyceride >>> monoglycerides glycerol fatty acids. Digestion. Mouth. Tongue. Salivary glands. Sublingual salivary gland. Stomach. Gallbladder. Liver. Pancreatic duct.

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LIPIDS

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  1. LIPIDS Part II: Digestion, Absorption, Transportation & Metabolism

  2. Digestion ofTriglycerides Goal: Triglyceride >>> • monoglycerides • glycerol • fatty acids

  3. Digestion Mouth Tongue Salivary glands Sublingual salivary gland Stomach Gallbladder Liver Pancreatic duct Pancreas Common bile duct bile lipases Small intestine Small intestine Large intestine Large intestine

  4. Absorptiontwo different routes • small bits bloodstream glycerol, short fatty acids • larger bitslymphmonoglycerides, long fatty acids

  5. Lipoproteins = Fat Transporters triglyceride protein • Four Types • Chylomicrons • VLDL • LDL • HDL cholesterol phospholipid

  6. Types of Lipoproteins LDL Chylomicron VLDL HDL

  7. Lipoproteins Compared

  8. Fat Metabolism Triglycerides Adipose Lipoprotein Lipase (LPL) Adipose Energy Hormone-sensitive Lipase

  9. LIPIDS Part III: Lipids and Health

  10. Function of Fats • Energy [adipose tissue] • Insulation • Protects bones and organs • Essential Fatty Acids • Linoleic (omega-6) • Linolenic (omega-3) Eicosanoids

  11. Heart Disease: Blood Lipid Profile • Total Cholesterol • LDL & HDL • Triglycerides

  12. High LDLs Saturated Trans Low HDLs Trans Omega-6s Low LDLs Monounsaturated Omega-3s High HDLs Omega-3s Heart Disease & Fatty Acids AVOID EMPHASIZE

  13. Cancer & Fat • Total Fat • Excess Calories • Animal Fats • Types of Fatty Acids • Lack of Vegetables & Fruits and other plant foods PHYTOCHEMICALS

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