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8 Cards in this Set
- Front
- Back
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Define Kilocalories
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1000 "scientific" calories.
the amount of energy necessary to raise one gram of water by one degree Celsius. |
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Describe BMR (basil metabolic rate) and factors that effect it.
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-the minimim energy level required by the human body while at rest (including no digestive activity) to keep the vital organs functioning.
-Average BMR for the adult is about 70 Cal per hour or 1680 Cal. per day. -20 percent of daily energy expenditure is dedicated to physical energy. -10 percent for thermoregulation and/or digestion -70 percent to keeping the vital organs alive. |
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Normal range for body temperature?
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98.6 (37 C)
Most efficient range for of body temperature is between 36 C and 40 C (97F - 104F) |
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State the methods that the body cools its self.
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Excess heat is removed by RADIATION, CONDUCTION, CONVECTION, and EVAPORATION.
Vasodilation allows increased blood flow near the surface of the skin. Sweat glands secrete more sweat onto the surface. |
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How does the body warm its self?
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-vasoconstriction
-Piloerection (skin hairs stand up) -Shivering increases localized cellular respiration. |
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State the role of the hypothalamus as the "thermostat of the body:
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Thermoreceptors located throughout the body detect changes in body temperature and relay the information to the hypothalamus. The hypothalamus sends the appropriate information to the appropriate places to cause the negative feedback to regulate the temporature to optimal performance range.
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Name the typical fever temps in the various places of the body:
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Rectal or Otic (ear): 38 C 100.4 F
Oral: 37.5 C or 99.5 F Axillary (under the arm) 37.2 C or 99.0 F |
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Name the advantages of Fever in the body:
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-Many pathogens (bacteria or viruses) can not function in teh human body when fever is present.
Some important immunological (chemical) reactions are sped up. White blood cells (infection fighters) function more efficiently in the fevered environment. |
