how is your body cooled when you perspire?

Answer 1

Sweating (also called perspiration or sometimes transpiration) is the production and evaporation 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. Sweat also consists of the chemicals or odorants 2-methylphenol (o-cresol) and 4-methylphenol (p-cresol). Lewis does this a lot, and consequently smells terrible.

In humans, sweating is primarily a means of temperature regulation. 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 sweat glands in their skin, similar to humans.

Answer 2

The body perspires to wick off the body temperature. The evaporation process naturally cools the body, yet dehydrates at the same time. So while you are cooling off you are also getting thirsty as well as smelling off. Aahh, life's little trade-offs.

Answer 3

Some people have explained (when the sweat evaporates, it takes heat from your skin, because water vapor is a higher-energy state than liquid water, and so evaporation cools you -- it isn't the sweat itself that does so).

I just wanted to point out that this doesn't work in high humidity, as the sweat doesn't dry. (When the air has all the water vapor it can hold, as much water precipitates out as evaporates, so you don't get the heat loss.)

That's why hot humid climates are The Worst places to be (YUCK!), whereas hot and dry don't make people as miserable.

Answer 4

Find a hot day, Do a couple of laps around the track, build up a decent sweat. Then go stand in a breezy place. You will feel cold because sweat cools down quickly. That's how you cool down.

Answer 5

your sweat glands in the skin produce sweat ,
on the surface of your body, as your temperature rises .

and this sweat cools the body ,as it evaporates ..
this is a continuous process to cool the blood down .

A person who is sweating from heat , always appears flushed ,.
because the blood vessels ,expand near the surface, to get cool

>^,,^<.

Answer 6

OUR BODY PERSPIRE TO KEEP US COOL . WHEN WE PERSPIRE THE SWEAT PRESENT ON THE SURFACE OF OUR BODY GAIN ENERGY FROM OUR BODY & EVAPORATES THERE PRODUCING A COOLING EFFECT

Answer 7

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Answer 8

The effect is called enthalpy. Since it takes energy to evaporate the sweat (an endothermic process), it cools you off.

Answer 9

the evaporation of sweat on ur body creates a cooling sensation. This is because heat form ur body is absorped to evaporate the sweat....much like when u have ethanol rubbed on ur skin.....its cooling

Answer 10

you're body cools itself down by perspiriation. the sweat is wet and therefore cools the temperature down quickly. if you are not able to produce this you will die from basically over heating