HLTH 2015: Physiology of Training and Environmental Extremes - Thermoregulation

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10 Terms

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Thermoregulation

Maintains body's core temperature; involves sweating, shivering, and blood flow changes.

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Heat

Energy measuring molecular vibration; moves by temperature gradient.

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Conduction

Heat transfer through direct contact.

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Convection

Heat transfer via liquid or gas movement.

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Evaporative Cooling

Evaporation from skin and respiratory passages cools the body.

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Homeotherms

Humans maintaining constant body temperature.

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Core temperature (Tc)

Measured rectally or estimated via auditory canal/esophagus.

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Hypothalamus

Regulates thermal balance; manages heat storage.

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Factors Evaluating the Environment

Air temperature, humidity, air currents, radiant heat, exercise intensity, acclimatization, clothing.

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Relative Humidity (RH%)

Measures water in air relative to total possible moisture.