CH.17 NUTRITION PT.2 Flashcards
GROUP OF COMPOUNDS THAT INCLUDES TRIGLYCERIDES (FATS AND OILS), PHOSPHOLIPIDS AND STEROLS
LIPIDS
LIPIDS CONTAINED IN FOOD
95% FATS AND OILS
3 FATTY ACIDS ATTACHED TO A GLYCEROL BACKBONE
TRIGLYCERIDE
FATTY ACIDS MAY BE WHAT ?
SATURATED ON UNSATURATED
FATTY ACID THAT HAS ONE DOUBLE BOND IN ITS CARBON CHAIN
MONOUNSATURATED FATTY ACID
FATTY ACID WITH MORE THAN ONE POINT ON UNSATURATION
POLYUNSATURATED FATTY ACID
PROVIDE IMPORTANT ESSENTIAL FATTY ACIDS (OR FATS THAT CANNOT BE MANUFACTURED BY BODY BUT ARE ESSENTIAL FOR PROPER HEALTH AND FUNCTIONING)
POLYUNSATURATED FATTY ACIDS
RISK FACTOR FOR HEART DISEASE B/C THEY RAISE BAD CHOLESTEROL LEVELS (LOW DENSITY LIPOPROTEINS; LDL)
SATURATED FATTY ACIDS
ASSOCIATED WITH INCREASE IN GOOD CHOLESTEROL (HIGH DENSITY LIPOPROTEINS; HDL) AND ARE ASSOCIATED W/ DECREASED RISK OF HEART DISEASE
UNSATURATED FATS
CONSIDERED TO HAVE FAVORABLE EFFECTS ON BLOOD LIPID PROFILES AND MAY PLAY A ROLE IN TREATMENT AND PREVENTION OF HEART DISEASE, HTN, ARTHRITIS AND CANCER
MONOUNSATURATED FATTY ACIDS (FOUND IN OLIVE AND CANOLA OILS)
POLYUNSATURATED FATTY ACIDS (OMEGA 3 FOUND IN COLD WATER FISH;SALMON)
PROCESS OF ADDING HYDROGEN TO UNSATURATED FATTY ACIDS TO MAKE THEM HARDER AT ROOM TEMP AND INCREASE FOOD SHELF LIFE; SEEN IN TRANS FATTY ACIDS
HYDROGENATION
SHOWN TO INCREASE LDL CHOLESTEROL AND DECREASE HDL, MUCH LIKE SATURATED FATS
TRANS FATTY ACIDS
MOST CONCENTRATED SOURCE OF ENERGY IN THE DIET
LIPIDS (FATS)
ONE GRAM OF FAT YIELDS HOW MANY CALORIES WHEN OXIDIZED ?
APPROX. 9 CALORIES
FATS ACT AS CARRIERS FOR WHAT FAT SOLUBLE VITAMINS ?
A, D, E, AND K
T OR F: FATS ARE IMPORTANT FOR THE CONVERSION OF CAROTENE TO VITAMIN A
TRUE
FATS ARE INVOLVED IN WHAT ?
- CELL MEMBRANE STRUCTURE AND FUNCTION
- PRECURSOR TO HORMONES
- CELL SIGNALS
- REGULATION & EXCRETION OF NUTRIENTS IN CELLS
- INSULATE BODY FROM ENV’T TEMPS
- PROLONG DIGESTIVE PROCESS
- INITIATE RELEASE OF HORMONE CHOLECYSTOKININ (CCK) WHICH CONTRIBUTES TO SATIETY
FATS HELP PROLONG DIGESTIVE PROCESS BY SLOWING STOMACHS SECRETIONS OF WHAT, CREATING A LONGER LASTING SENSATION OF FULLNESS ?
HYDROCHLORIC ACID
IN THE INTESTINE, FAT INTERACTS W/ WHAT TO BECOME EMULSIFIED SO PANCREATIC ENZYMES CAN BREAK TRIGLYCERIDES DOWN INTO FATTY ACIDS AND A MONOGLYCERIDE
BILE
THROUGHOUT THE DYA TRIGLYCERIDES ARE CONSTANTLY CYCLED IN AND OUT OF TISSUES INCLUDING WHAT ?
MUSCLES, ORGANS AND ADIPOSE
ACCEPTABLE MACRO DISTRIBUTION RANGE FOR FAT INTAKE FOR AN ADULT
20-35% TOTAL CALORIES FROM FAT INTAKE
ATHLETES ARE RECOMMENDED TO CONSUME WHAT % OF TOTAL CALORIES FROM FAT ?
20-25%
DIETS HIGH ON WHAT ARE NOT CONDUCIVE TO SUCCESSFUL WT LOSS OR MAINTENANCE AND APPEAR TO INCREASE EASE W/ WHICH BODY CONVERTS INGESTED CALORIES TO BODY FAT
HIGH FAT DIETS
WHAT HAS LOWER THERMIC EFFECT THAN OTHER MACROS ?
FAT
AS FAT % IN DIET INCREASES THAT AMT. OF WHAT DECREASES ?
HEAT GIVEN OFF (TEF)