Sweating

Sweating is the secretion of fluid onto the skin by sweat glands. Its evaporation helps cool the body, while its salts and other components also affect skin balance.

Eccrine sweat gland: A coiled skin gland that releases watery sweat through a duct to the surface. These glands produce most sweat used for cooling across much of the body.
Body temperature: A measure of the thermal state of an organism, influenced by heat production and heat exchange. Rising internal temperature is one signal that increases sweating.
Heat exhaustion: A heat-related illness involving fluid and salt loss and impaired ability to cope with heat. Prolonged sweating can contribute to the losses associated with this illness.
Anhidrosis: The absence or marked reduction of sweating in response to heat or exertion. It is the opposite failure mode from excessive sweating and can impair cooling.
Apocrine sweat gland: A skin gland that releases a protein- and lipid-rich secretion into hair follicles, mainly in the armpits and groin. Its secretion differs from the watery sweat that chiefly cools the body.
Skin: The body's outer organ, forming a protective barrier and helping regulate temperature and sensation. Sweat reaches the surface through glands embedded in the skin.
Heat stroke: A life-threatening heat illness marked by severe hyperthermia and central nervous system dysfunction. Sweating may continue or diminish during heat stroke; its presence does not rule it out.
Hyperhidrosis: Sweating excessive enough to disrupt daily activities or cause substantial distress. It exceeds ordinary thermoregulatory sweating and can occur without heat or exertion.
Thermoregulation: The processes by which an organism maintains its internal temperature within a viable range. Sweating is a major human response to rising body temperature.
汗腺: A skin gland that produces and releases sweat through a duct or into a hair follicle. Sweat glands are the structures that secrete the fluid.

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