ANP 1107 Lecture Notes - Lecture 10: Basal Metabolic Rate, Muscle Atrophy, Adrenal Medulla

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1107
• Professor: Jacqueline Carnegie

Document Summary

2. 9 define basal metabolism & total metabolism and identify the factors that influence them. Bmr is a measure of the energy used to maintain only the essential activities when awake (breathing, resting levels of organ function) = energy cost of living : bmr is reported as kcal/m2/hr. Can be approximated by multiplying weigh (in kg) x 1 [ Regulation of metabolic rate: stress: (physical or emotional) - can increase metabolic rate. Total rate of kcal consumption to fuel all ongoing activities (sum of bmr-related calorie consumption plus voluntary activities) Usually bmr accounts for most of tmr: eg: a woman may expend 2000 kcal energy in a day, of this ~1400 kcal is to maintain bmr. Work done by skeletal muscle (can be nearly half of body mass) produce largest increases in tmr. When exercising, an athlete can increase metabolic rate by 15-20 fold and this can remain elevated for hours after completion of activity: food ingestion also impacts on tmr.