UWEC BIOL 196 - Metabolism, Phospholipids (3 pages)

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Metabolism, Phospholipids

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Metabolism, Phospholipids


Metabolism, Phospholipids, Cholesterol

Lecture number:
Lecture Note
University of Wisconsin-Eau Claire
Biol 196 - Human Nutrition
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BIOL 196 1st Edition Lecture 22 Outline of Last Lecture I Health dangers of excessive Trans fatty acids II Circulation III FDA proposed ban on trans fat IV Essential fatty acids all are polyunsaturated V Why is fish oil or EPA DHA so important VI Functions of EFA s essential fatty acids Outline of Current Lecture I Metabolism II Adipose tissue III Continuation of metabolism IV Functions of TG fat V Fat in the diet VI Phospholipids VII Cholesterol Current Lecture I Metabolism a Chylomicrons in the blood are broken down by lipoprotein lipase to yield i Fatty acids glycerol etc These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute II III IV V VI b Fatty acids converted into new TG and stored in adipose cells or become fatty components of other cells c Glycerol like carbs almost glucose liver and kidneys i Remnant liver can be turned into LDL Adipose tissue a 50 subcutaneous b 45 around vital organs IAA Intra abdominal adiposity or visceral fat i Protects organs holds them in place BUT extra can lead to problems with health c 5 intramuscular i Even heart muscle if they gain extra weight d Fat cells part of visceral area in particular make hormones some that affect hunger satiety make proinflammatory factors increase disease Continuation of metabolism a The fat you eat becomes you b If you eat trans and sat fat that is what is in your adipose tissue c When we gain too much weight deposited in liver heart extra muscle etc Functions of TG fat a Concentrated Energy source 9kcal g b Insulate protect body c Sources of fat soluble vitamins and essential fatty acids d Keep gallbladder healthy and working i Rapid weight loss low fat causes gallstones ii When you do eat a fat containing meal your gallbladder contracts to release old bile and PAIN ensues e Positive functions of EFA s Fat in the diet a Typical intake is 33 34 of kcals b Recommendations 20 35 of kcals for healthy people over age 2 i The types of fat is important ii Children age 2 and up NEED heart healthy diets c Infants i Need a high fat intake because some vital organs are still developing ii Kidneys not diluting formula a girl got gangrene and had to get both legs amputated at 6 months d Olive oil anti inflammation may slow disease process of some conditions e Don t eat trans fatty acids i If 0 5 g per serving a company can say there is 0 g However if you consume more than 1 serving you are getting more than 1g of trans fat f Limit your saturated fat intake Phospholipids a 3rd category of lipids b Functions VII i Part of cell membranes 1 Needs to be healthy and not break ii Have C H O and Phosphorous c Eicosanoid synthesis d Emulsifier fat digestion i Bile acids bile made of mostly cholesterol ii Lecithins iii Part of lipoproteins Cholesterol a Vitamin D from sun in skin have a type of cholesterol sunlight changes it to vitamin D i Have to balance summer months and skin cancer b Part of all of our cells gives cells structure and integrity c Functions i Major component of brain and nerve cells bile vitamin D adrenocortical and sex hormones lipoproteins

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