L1 and L2 Flashcards
hyperthyrodism affects the BMR , how?
increases BMR
how does temperature affect BMR?
hot temperature decreases it while cold temperature increases it
what is DIT ( diet induced thermogenesis ?
following the ingestion of food , the metabolic rate increases because energy is required to digest , absorb and distribute nutrients
what is the rasparatory quotient ?
volume of co2 produced/ volume of o2 consumed . it could be used as an indicator of the fuel being used by the body at the time
what are available carbohydrates and what is the main dietary carbohydrate >?
available carbs are thosde which can be matabolized in the body to give energy . the main dietary carb is starch .
what are unavailable carbs and what is the main dietary fiber ?
unabailale carbs are carbs that cannot be digested by the body ( due to absence of B1-4 GLYCOSIDASE enzyme in the human gut ) . cellulose is the main dietary fiber .
why is a minimal intake of lipids essential ?>
because they are important for fat soluable vitamins and essential fatty acids .
what is the major dietary lipid ?
TAG
what is the nutritional significance of essential amino acids?
- they are components of phospholipids in the body including bio membranes
- required for estrification of cholestrol
- act as precursor of prostaglandins and leukotrines
- antiathrogenic effect
excess PUFA in the body leads to ?
free radical formation unless antioxidants are available
Hypercholesterolemia leads to?
atherogenesis and is a risk factor for CHD.
