Abstract des Autors

The temperature regulatory system provides for physiological control of the The temperature regulatory system provides for physiological control of the bodys heat flows in such a way as to attempt to balance heat production and heat loss. Temperature sensors on the skin surface and in the hypothalamus constantly appraise the regulatory center, also in the hypothalamus, of the bodys thermal profile. If, because of thermal disturbances, the thermal profile deviates from a desired condition, the regulatory center directs an efferent response to correct for this deviation. Efferent organs are the skeletal muscles for elevations in heat production, the smooth muscles of the arterioles for control of heat transfer within the body, and the sweat glands for increases in heat dissipation. During exercise when heat production is high, the body achieves anew, elevated steady state of internal temperature that is related to the exercise intensity in any individual. This is not a new regulated temperature, but a steady state determined by the rate at at which the heat dissipation responses were activated to the level at which they balanced the heat production. Verf.-Referat