Sweat
Perspiration (also called sweating or sometimes transpiration) is the production of a fluid, consisting primarily of water as well as various dissolved solids (chiefly chlorides), that is excreted by the sweat glands in the skin of mammals. Sweat also contains the chemicals or odorants 2-methylphenol (o-cresol) and 4-methylphenol (p-cresol), as well as a small amount of urea.
In humans, sweating is primarily a means of thermoregulation, although it has been proposed that components of male sweat can act as pheromonal cues . Evaporation of sweat from the skin surface has a cooling effect due to the latent heat of evaporation of water. Hence, in hot weather, or when the individual's muscles heat up due to exertion, more sweat is produced. Sweating is increased by nervousness and nausea and decreased by cold. Animals with few sweat glands, such as dogs, accomplish similar temperature regulation results by panting, which evaporates water from the moist lining of the oral cavity and pharynx. Primates and horses have armpits that sweat similarly to those of humans.
topSweat
Perspiration (also called sweating or sometimes transpiration) is the production of a fluid, consisting primarily of water as well as various dissolved solids (chiefly chlorides ...
Perspiration - Wikipedia, the free encyclopedia
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Sweat
The skin contains two different groups of sweat glands: apocrine sweat glands and merocrine sweat glands. Both gland types contain myoepithelial cells (from Latin myo-, "muscle ...
Sweat gland - Wikipedia, the free encyclopedia
Sweat is your body's way of cooling itself. Learn about eccrine and aprocrine sweat glands, how the body makes sweat and what factors affect sweating.
HowStuffWorks "How Sweat Works"
Everybody sweats. Find out why perspiration happens in this article for kids. ... You're biking up a hill, pedaling as hard as you can. You're almost there and — what's this?