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Why Do We Sweat?

The diaphoresis is a process at which on a skin the liquid secrete of the sweat glands is allocated. In a human body sweat allocate, basically, sweat glands whereas the diaphoresis by means of apocrine glands is reduced. Diaphoresis process is very important for the person at a thermoregulation as sweat deduces from an organism and salt. Experimentally sweat allocation can be caused, irritating the nervous terminations at of sweat glands with influence of heat, an electro current or hypodermic introduction of Pilocarpinum and other preparations.

As a matter of fact, the diaphoresis is a reflex. Skin thermo receptors are irritated at air rise in temperature, reception of hot liquids, exercise stresses or stresses. For innervations of sweat glands efferent nerves answer. However their nature is in that diaphoresis intensifying occurs under influence cholyenergetics, chokes by means of atropine. That fact is important that the diaphoresis is influenced by adrenaline. On the basis of it assume that nervous fibers also take part in innervations of sweat glands that can serve as a starting point of development of a hyperhidrosis. Directly it is bound thermoregulation diaphoresis to a spinal cord: at its damages below a break it completely vanishes, but there is a reflex diaphoresis.

Sweat at the person is allocated always, even on low temperatures of medium, however increases proportionally to air rise in temperature, and at its value above 33 ° passes in the dominating form of a thermolysis. At a heat and exercise stresses at the person it can be allocated to 12 liters of sweat a day. However constant residing at a hot climate leads to adaptation and depression of quantity of sweat. At the person of sweat glands and their activation begin the development approximately with two-year age, therefore adaptation to this age optimum further.

The sweat, the more it concentrated the longer it is allocated. Concentration increases at the expense of chloride sodium, and subsequently the diaphoresis stops. It is necessary to mean that if to fill in a heat and at loads stocks of an organism with water in quantity, larger, than it can be allocated with then the considerable quantity of salts will be deduced from an organism too. Besides salts, metabolic products are allocated also. It is urea, ammonia, enzymes amylase.

It is remarkable that on soles of feet and palms the person does not have sebaceous glands, and sweat does their skin less vulnerable and softer. It is important that sweat glands in these sites of a human body are concentrated in the areas coinciding with areas of diffusion of receptors therefore us easier to keep subjects, to perceive them and to perceive. High reflex excitability of these sites leads to that sweat allocation here is appreciable above but it in usual conditions.

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