perspiration


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Related to perspiration: insensible perspiration

perspiration:

see sweatsweat
or perspiration,
fluid secreted by the sweat glands of mammalian skin and containing water, salts, and waste products of body metabolism such as urea. The dissolved solid content of sweat is only one eighth that of an equal volume of urine, the body's main
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.

Perspiration

 

sweating, the formation of sweat and its excretion by the sweat glands onto the surface of the skin.

Perspiration is well manifested in man, higher and lower apes, and ungulates (mainly perissodactyls). In rodents, insectivores, bats, terrestrial predators, and lower mammals (duck-billed platypus and echidna) it is almost nonexistent. In man perspiration is continuous. It is performed principally by reflex action—reflex receptors are located in the skin, mucosa, and muscles. Adequate stimuli for the perspiration reflex are high air temperature, ingestion of hot or pungent food or large quantities of fluids, physical exertion, fever, and emotional states. Perspiration centers are located in the cerebral cortex, hypothalamus, medulla oblongta, and spinal cord. Perspiration may be increased or decreased by means of medicinal preparations. It depends on blood circulation in the skin: when the blood vessels are dilated it increases; when they are constricted it decreases. It is an adaptation of the body to temperatures over 33°C. Perspiration is involved in thermoregulation and in maintenance of the water and salt balances of the body. Perspiration is important as an excretory function, especially with diseases of the kidneys.

Perspiration disorders may be quantitative (general or local) or qualitative. Quantitative disorders are more frequent and are expressed as increase (hyperhidrosis), decrease (hypohidrosis), or absence (anhidrosis) of perspiration. General hyperhidrosis occurs with various infections, intoxications, functional disturbances of the endocrine glands (hyperthyroidism), and other diseases. Increased perspiration may also be produced by the severe emotional excitement of fear or pain, in which case on pale, cold skin a “cold sweat” appears. Local perspiration disorders arise with many skin diseases, such as eczema, psoriasis, and shingles. Hypohidroses and anhidroses are observed in the region of scars after burns and wounds, as well as in leprosy and certain vascular diseases. Disorders of perspiration arise most often when there is disease of various sections of the nervous system, such as expressed hyperhidrosis of the hands and feet, which occurs in neuroses.

Qualitative perspiration disorders are manifested by changes in composition and color of excreted sweat. Thus, the sweat may sometimes be fatty because of admixture with the secretions of the sebaceous glands in seborrhea. With diabetes mellitus it may contain increased sugar. With uremia, increased amounts of urea and uric acid are noted. Treatment is directed toward the basic disease. Local symptomatic agents are also used.

perspiration

[‚pər·spə′rā·shən]
(physiology)
The secretion of sweat.
(chemistry)

perspiration

1. the act or process of insensibly eliminating fluid through the pores of the skin, which evaporates immediately
2. the sensible elimination of fluid through the pores of the skin, which is visible as droplets on the skin
3. the salty fluid secreted through the pores of the skin; sweat
References in periodicals archive ?
To compare the performance of this novel prosthesis with a standard-of-care prosthesis (total surface bearing suction socket), we conducted a within-subject crossover experiment to measure differences in (1) activity levels, (2) residual-limb skin temperatures, (3) perspiration accumulation by both prostheses and expulsion by the novel prosthesis, and (4) subjective experiences.
Netherlands-based Lucy McCrae, the artist behind the unlikely idea, wrote on her site, "Swallowable Parfum is a digestible scented capsule that emits a unique odour through your own perspiration.
Marks & Spencer have a budget option Aloe Vera Roll On Anti-Perspirant, pounds 1, and Matis have Reponse Corps Roll-On Deodorant, pounds 11, which has been specially formulated to help reduce excess perspiration.
Perspiration remained, but the inspiration was gone and so too was Fletcher.
Choose fabrics like a wool lisle or a wool and cotton blend, as these materials don't cling to the feet or encourage perspiration, says men's style expert and haberdasher Anthony T.
Market research shows that teens--both boys and girls--are very concerned with excessive perspiration.
Almost 14 million young people feel that perspiration is a problem, according to the Certain Dri Teen Perspiration Poll.
The higher the SPF factor, the longer you will be protected - you should always apply sunscreen on a regular basis though, as it will get rubbed off Sunscreens with SPF numbers higher than 15 may work better for people who are fair-skinned, live at high altitudes, work or play outdoors for much of the day, or perspire heavily Swimming and perspiration reduce the actual SPF value of many sunscreens - even those that are water-resistant - so you have to reapply the product often To get the maximum protection from your sunscreen, apply at least one large handful about 30 minutes before you go outside, and reapply after swimming, towelling yourself dry or participating in any vigorous activity that causes heavy perspiration
Their soft silk costumes, wet from perspiration, become a second skin (like a fish skin).
HIV/AIDS can be spread through bodily perspiration and other fluids"
The drug markedly reduced clinical symptoms of acromegaly including headache, fatigue, perspiration, arthralgia, parathesias and carpal tunnel syndrome.