Lecture4 - Lecture #4 Levels of Metabolism 08/07/2008...

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Unformatted text preview: Lecture #4 Levels of Metabolism 08/07/2008 15:19:00 * the dog B. Levels of metabolism 1.Minimum metabolic rate maintenance=minimum metabolic demand o Strict conditions for measuring minimum metabolic rate 1. animal needs to be fasted (no food in stomach) 2. animal needs to be a rest, thermally neutral environment (endotherms) 3. adult, non-pregnant, non-lactating *Kleiber conditions a.) Basal metabolic rate (BMR) o Endothermic animals warm blooded- internal heat source Mammals and birds b.)Standard metabolic rate (SMR) o Ectothermic animals cold blooded- external heat source Everything but mammals and birds (lizards, bugs, etc.) 2. Resting metabolic rate (RMR) o 2 BMR for mammals o alert, pre-exercise o Human: RMR= 440kJ/hour BMR=270kJ/hour 3. Active metabolic rate o Exercising 10-25 BMR up to VO2 max o Humans: ~ 10 BMR o Certain canids: 25 BMR 4. Average Daily Metabolic rate: measure metabolism by taking all metabolic rates in to account over 24 hour period Aerobic Metabolism Oxygen is ultimately required for the complete breakdown of fuels-lipids, carbs, proteins- for maximum energy payout ATP Respiratory: ambient air to lungs Cardiovascular: moving O2 + CO2 in the blood Skeletal muscles: ultimately consumes O2 Digestive system: provides fuel for all processes, fuel to get ATP * ALL WORK TOGETHER toward producing and using ATP Respiratory System I 08/07/2008 15:19:00 I. Main functions A. Gas exchange: primary function 1. move O2 from air venous blood 2. move CO2 out B. remove some compounds from blood 1....
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This note was uploaded on 07/23/2008 for the course BIO 131 taught by Professor Mostman during the Summer '08 term at University of California, Santa Cruz.

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Lecture4 - Lecture #4 Levels of Metabolism 08/07/2008...

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