Keeping Cool: The Science of Sweat
By Alina Bradford, Live Science Contributor | May 24, 2017 10:51pm ET
While sweating, or perspiration, can be embarrassing, it is an important body function. Sweating, and a lack of sweating, can also be a helpful sign that there is something wrong with the body.
Causes
Sweating is the release of a salty liquid from the sweat glands. The liquid has one main purpose: as it evaporates, it helps to cool the body. Sweating is regulated by the autonomic, or sympathetic, nervous system. Signals, using the neurotransmitter acetylcholine, are sent to the sweat glands. The sweat is then released to the skin surface through ducts.
http://www.livescience.com/59254-facts-about-sweating.html
