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APK3100_TemperatureRegulation

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APK3100_TemperatureRegulation_TemperatureRegulation_TemperatureRegulation

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  • March 27, 2024
  • 34
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • apk3100temperatureregulation

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  • APK3100_TemperatureRegulation
  • APK3100_TemperatureRegulation

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APK3100_TemperatureRegulation humans are ____ - ANSWER -homeotherms maintaining constant core body temp - ANSWER -
homeothermic heat loss must match heat gain - ANSWER -
homeothermic normal core temperature - ANSWER -37 degrees C (98.6 F) temperature that may destroy proteins and enzymes and lead to death - ANSWER -Above 45°C (113 F) temperature that may cause slowed metabolism and arrhythmias - ANSWER -Below 34°C (93.2) what is the idea l thermal gradient from body core to skin surface; what is it in extreme cold? - ANSWER -Ideal gradient is ~4°C In extreme cold, may be 20°C top 2 places that we sweat from the most - ANSWER -forehead and back What is the Body's Thermostat? - ANSWER -
preop tic anterior hypothalamus (POAH) what maintains a relatively constant core temperature around a set point - ANSWER -
Preoptic Anterior Hypothalamus (POAH) two responses to increase in core temp - ANSWER -Stimulation of sweat glands (evaporative heat loss) Cutaneous vasodilation, allowing increased heat loss- expanding blood vessels, allows blood to get closer to skin to allow for heat dissipation three responses to a decrease in core temp - ANSWER -1. Shivering/rapid muscle contraction and 2. increased nor epinephrine release -< leads to vasoconstriction --Increased heat production 3. Decreased skin blood flow via vasoconstriction --Decreased heat loss increased body temperature above normal - ANSWER -fever proteins or toxins from bacteria that cause fever - ANSWER -pyrogens

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