what does sweat contain?

trying to find out water and waste products that are eliminated through the skin from the digestive stystem
Answers:
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. Sweat also consist of the chemicals or odorants 2-methylphenol and 4-methylphenol.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.

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Mainly Sodium and Chloride, which is why it tastes salty. It also contains small amounts of other chemicals including urea. also some pheromones, from certain parts of the body, and some organis chemicals, fresh sweat dosen't smell bad, but after being attacked by skin bacteris, it will start to smell bad.

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"Human sweat contains numerous substances. The most important substance to be replaced during and after exercise besides water, is sodium chloride (salt). Salt helps maintain proper neuromuscular action and promotes rehydration. In addition, salt, as in sports drinks, triggers thirst and helps prevent dehydration. Frequent muscle cramping in a minority of athletes results from excessive amounts of salt lost through sweat. This can be alleviated by consuming larger quantities of salt, in addition that provided in sports drinks."

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sweat contains Nacl(Sodium chloride ) Urea, amino acids, water,proteins

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well, it mainly composed of:
1-water.
2-sodium chloride.
3-urea.
4-odorants like 2-methylphenol and 4-methylphenol.

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