Metabolic Rate Flashcards
Sum of all chemical processes that occur on a cellular level to maintain homeostasis; nutrients must enter a cell in order for it occur
Metabolism
Breaking down of substances with the resultant release of energy
Catabolism
Use of energy to build or repair substances
Anabolism
Excess glucose is converted to ______ and stored where?
Glycogen, liver and muscle tissue
Surplus glucose is converted to
Fat
Glycerol and fatty acids are reassembled into _______ and stored where
Triglycerides, adipose tissue
Amount of energy used when the body is at rest
Basal metabolic rate
BMR is primarily affected by
Lean body mass and hormones
Lean muscular body build affects BMR how
Increase
Short, overweight body build affects BMR how
Decrease
Starvation/malnutrition affects BMR how
Decrease
Exposure to extreme cold affects BMR how
Increase
Prolonged stress affects BMR how
Increase
Rapid growth periods (infancy, puberty) affects BMR how
Increase
Pregnancy affects BMR how
Increase
Lactation affects BMR how
Increase
Over 60 years of age affects BMR how
Decrease
Physical conditioning affects BMR how
Increase
Conditions that increase metabolism
Fever Involuntary muscle tremors i.e. shivering or Parkinsons Hyperthyroidism Cancer Cardiac failure Some anemias Hypertension Chronic obstructive pulmonary disease Burns Surgery/wound healing HIV/AIDS
Conditions that decrease metabolism
Hypothyroidism
Medications that increase BMR
Somatroprin (genotropin) Prednisone (Deltasone) Hydrocortisone (Cortef) Epinephrine hydrochloride Levothyroxine sodium (Synthroid) Glucagon Ephedrine sulfate Amitriptyline (Elavil)
Positive nitrogen balance occurs when
Periods of growth Infancy Childhood Adolescence Pregnancy Lactation
Negative nitrogen balance occurs when
Illness
Trauma
Immobility
Malnutrition
What are strategies to increase protein and caloric content?
Add skim milk powder to milk (double strength milk)
Substitute whole milk for water in recipes
Add cheese, peanut butter, chopped hard-cooked eggs, or yogurt to foods
Dip meats in eggs or milk and coat with bread crumbs before cooking