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The Lipids: Fats, Oils, Phospholipids, and Sterols

Lecture, textbook notes
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What are the three classes of Lipids?
Triglycerides, Phospholipids, Sterols
Can lipids harm health?
While Lipids are necessary and valuable they are a source of energy, they can harm health
What are some uses of fats in the body?
Insulation, shock absorbers, cell membranes. It is the chief storage form of energy. Secretes Hormones. Helps dissolve fat soluble substances
Fat Cell
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Why do people like high-fat foods?
It smells good (Aromas), it tastes good (Flavor), its tender (Tenderness), its satiable (Satiety)
Triglycerides
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What are the differences b/w fatty acids?
Chain length-
Saturation-
Saturated fats
fatty acid chains lack double bonds; therefore, the chains pack tightly, solid at room temp and bad fats, major source is meat. "Saturated fats equals death"
Unsaturated Fats
plant products such as vegetable oil, nuts,m and seeds, and in fish. Unsaturated fats tend to lower blood cholesterol levels
Polyunsaturated Fats
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Monounsaturated Fats
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Trans Fat
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How hard should healthier fat be?
Softer is generally (Key word, Generally) healthier
How are fats Digested?
Bile from the pancreas emulsifies (Breaks it up) the fat in the small intestine.
How are the fats broken down?
Fatty acids split from glycerol (fatty acids, phopholipids, and monos). Bile shuttles lipids across mucus layer. Glycerol and shorter chain fatty acids are sent to the blood stream. Larger lipids