Nursing HAP201 Chapter Notes - Chapter 25: Preoptic Area, Muscle Tone, Thermostat
14 Mar 2017
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Hap201 week nine/chapter 25: heat and energy balance (pg. 25. 8 heat and energy balance: hemostasis of body temperature can be maintained only if the rate of heat loss from the body equals the rate of heat production by metabolism. The measurement obtained under these conditions is basal metabolic rate (bmr). Body temperature homeostasis: homeostatic mechanisms can maintain a normal range for internal body temperature. Depending on the environmental temp, shell temp is 1-6c lower than the core temp. If the core temp is too high, it will denature body proteins; a core temp that is too low causes cardiac arrhythmias that lead to death: heat production, the production of body heat is proportional to metabolic rate. There are several factors that affect the mr and thus heat production: exercise: mr may increase during strenuous exercise, as much as 15 times, hormones: thyroid hormones are the main regulators of bmr.
