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Encyclopedia > Sweating

Perspiration (also called sweating or sometimes transpiration) is the production and evaporation of a fluid, consisting primarily of water as well as a smaller amount of sodium chloride (the main constituent of "table salt"), 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). Transpiration is the evaporation of excess water from aerial parts and of plants, especially leaves but also stems, flowers and fruits. ... Impact from a water drop causes an upward rebound jet surrounded by circular capillary waves. ... R-phrases 36 S-phrases none Flash point Non-flammable Related Compounds Other anions NaF, NaBr, NaI Other cations LiCl, KCl, RbCl, CsCl, MgCl2, CaCl2 Related salts Sodium acetate Supplementary data page Structure and properties n, εr, etc. ... Edible salt is a mineral, one of the few rocks people eat. ... Human submaxillary gland. ... Beyond overall skin structure, refer below to: See-also. ... Subclasses & Infraclasses Subclass †Allotheria* Subclass Prototheria Subclass Theria Infraclass †Trituberculata Infraclass Metatheria Infraclass Eutheria Mammals (class Mammalia) are warm-blooded, vertebrate animals characterized by the presence of sweat glands, including those that produce milk, and by the presence of: hair, three middle ear bones used in hearing, and a neocortex... An Odorant is an substance that can be smelled. ... Cresols are organic chemical compounds which are methylphenols. ... Cresols are organic chemical compounds which are methylphenols. ...


In humans, sweating is primarily a means of thermoregulation, although it has been proposed that components of male sweat can act as pheromonal cues [1]. 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. This article is about modern humans. ... Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when temperature surrounding is very different. ... Fanning honeybee exposes Nasonov gland (white-at tip of abdomen) releasing pheromone to entice swarm into an empty hive A pheromone is a chemical that triggers an innate behavioural response in another member of the same species. ... “Vaporization” redirects here. ... In thermochemistry, latent heat is the amount of energy in the form of heat released or absorbed by a substance during evaporation. ... hey BOYZZZZZ my name is VIVIAN MITCHELL and im from EDH CALIFORNIA i am so smart and HOTT thats why i have a BOYFRIEND sorry boyz im TAKEN! call me some time my numbaa is 916-337-9333 19-07 Can someone remove this retarded article please? ^^I think I... For other uses, see Nausea (disambiguation). ... Trinomial name Canis lupus familiaris The dog (Canis lupus familiaris) is a domestic subspecies of the wolf, a mammal of the Canidae family of the order Carnivora. ... The pharynx (plural: pharynges) is the part of the neck and throat situated immediately posterior to the mouth and nasal cavity, and cranial, or superior, to the esophagus, larynx, and trachea. ...

Contents

How sweat glands operate

There are two kinds of sweat glands, and they differ greatly in both the composition of the sweat and its purpose: Sweating (also called perspiration or sometimes transpiration) is the loss of a watery fluid, consisting mainly of sodium chloride and urea in solution, that is secreted by the sweat glands in the skin of mammals. ...

  • Eccrine sweat glands are distributed over the entire body surface, but are particularly abundant on the palms of hands, soles of feet, and on the forehead. These produce sweat that is composed chiefly of water with various salts. These glands are used for body temperature regulation.
  • Apocrine sweat glands produce sweat that contains fatty materials. These glands are mainly present in the armpits and around the genital area and their activity is the main cause of sweat odor, due to the bacteria that break down the organic compounds in the sweat from these glands.

A diagrammatic sectional view of the skin (magnified). ... A diagrammatic sectional view of the skin (magnified). ...

See also

Diaphoresis is excessive sweating commonly associated with shock and other medical emergency conditions. ... Primary hyperhidrosis is the condition characterized by abnormally increased perspiration, in excess of that required for regulation of body temperature. ... Anhidrosis means lack of sweating. ... The electrolyte disturbance hyponatremia or hyponatraemia exists in humans when the sodium level in the plasma falls below 135 mmol/l. ... This article does not cite any references or sources. ... Bromhidrosis or body odor (also called bromidrosis, osmidrosis and ozochrotia) is the smell of bacteria growing on the body. ... Hidradenitis suppurativa or HS is a skin disease that affects areas bearing apocrine sweat glands and hair follicles; such as the underarms, groin and buttocks, and under the breasts in women. ... Fanning honeybee exposes Nasonov gland (white-at tip of abdomen) releasing pheromone to entice swarm into an empty hive A pheromone is any chemical produced by a living organism that transmits a message to other members of the same species. ...

References

  1. ^ Smelling a single component of male sweat alters levels of cortisol in women", C. Wyart et al., Journal of Neuroscience, February 7, 2006

External links

The University of California, Berkeley (also known as Cal, UC Berkeley, UCB, or simply Berkeley) is a prestigious, public, coeducational university situated in the foothills of Berkeley, California to the east of San Francisco Bay, overlooking the Golden Gate and its bridge. ...

Further reading

  • Ferner S, Koszmagk R, Lehmann A, Heilmann W., Z Erkr Atmungsorgane. 1990;175(2):70-5. 'Reference values of Na(+) and Cl(-) concentrations in adult sweat'
  • E. R. Nadel, R. W. Bullard, and J. A. Stolwijk, "Importance of skin temperature in the regulation of sweating", Journal of Applied Physiology, Vol. 31, Issue 1, 80-87, July 1, 1971

  Results from FactBites:
 
Sweating - Wikipedia, the free encyclopedia (553 words)
Sweating (also called perspiration or sometimes transpiration) is the loss of a watery fluid, consisting mainly of sodium chloride (commonly known as salt) and urea in solution, that is secreted by the sweat glands in the skin of mammals.
Sweating is increased by nervousness and nausea and decreased by cold.
The sweat glands are controlled by sympathetic cholinergic nerves which are controlled by a centre in the hypothalamus.
  More results at FactBites »

 
 

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