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Thermoregulation _2 (BB)

Thermoregulation _2 (BB) - Last time.recap Thermoregulation...

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5/29/11 Last time..recap Thermoregulation is a Balance between the bodies intrinsic… The inefficiency of the contraction is what gives off heat, not the contraction it self The body is very inefficient (energy wise) Combo of internal and external (environment) input
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Click to edit Master subtitle style 5/29/11 Homeostasis and Thermoregulation #2 MOV 365 – Clinical Exercise Physiology Dr Ross Sherman
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5/29/11 Lecture Outline: Overall thermoregulation ‘system’ Body temperature Heat transfer (active and passive) Effectors of body temp change Variations in body temp Measurement of body temp Summary
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5/29/11
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5/29/11 Notes from chart..^ External – effected by humidity and temp (External) is Primarily detected by peripheral (sub dermis and cutaneous skin layers) Central N looks more at brain temp Thalmus is higher brain center where interpretation and efferent info sending.
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5/29/11 Internal body temperature Approx 50% of energy used for body heat BMR produces 1kcal*kg-1*h-1 Human tissue requires 0.83 kcal* to INCREASE body temp by 1 degree C Therefore, with no heat loss, body temp. would ° by INCREASE by 1 degree C per hour at rest Metabolic heat production (extra) Body temp. is an ACTIVE BALANCE
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5/29/11 Internal body temp. Regulated around “set point” of 37 degrees C ‘Hypo’ and ‘hyper’-thermia Environmentally, pathogen(disease)– immune response to infection etc) and exercise-induced Hypo – “Cold” < 35 degrees C (core temp) 4 levels
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5/29/11 42 Death 40 Heat stroke 38 36 34 Intense shivering / loss of co-ordination 32
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