Thermolysis
The thermolysis consists of the whole of the systems concerned by the organizations homéothermes in order to dissipate the surpluses of heat and to maintain the Température interns stable (37°c for the man, 40°c for the dog).
In the thermal zone of comfort (between 18°c and 32°c for the Man) the heat produced by the Métabolisme compensates for exactly the losses of heat per radiation, convection, conduction and transpiration (insensitive sudation).
With the top of 32°c the cutaneous temperature becomes lower than the outside temperature. The exchanges by Radiation and Convection then constitute a profit of heat for the organization which must bring into play systems of thermolysis in order to keep the temperature interns with 37°c. At the man the only effective system of thermolysis is the Sudation. The sweat which wets the skin " emporte" with it a certain heat while evaporating. This mechanism is ineffective in water but also in the atmospheres saturated with moisture.
It is necessary to know that in a hot environment, there is vasodilation of the vessels, therefore hypotension and increase of the cardiac flow. the people having problems cardiac thus manages badly thermolysis
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