Sweat, which contains water and urea
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Salt and water are excreted in the form of sweat through the skin.
All the general anesthetic agents absorbed through lungs are excreted through lungs only. Many heavy metals, rifampicin are excreted partially through skin. All the large drug molecules, not excreted by kidney are excreted by liver through bile.
The main waste excreted by the skin is heat.
as there is a proper system of excretion in human being likewise in animals the waste material is excreted by stool through anus in big animals and in insects by their skin.
Bile is not typically excreted through the skin. Bile is produced by the liver and stored in the gallbladder before being released into the intestines to aid in digestion. If there is a problem with the liver or bile ducts, it can sometimes lead to a condition called jaundice, where bile pigments can accumulate in the skin and cause a yellow discoloration.
sweat ,excess water, urea, carbon dioxide and ammonia are excreted in skin.
Four wastes excreted by the skin are water, salt, urea, and uric acid.
Water can, and does, move through the pores of human skin. Sweat (mostly water) is excreted (out) through skin pores. Additionally, some water is absorbed (in) through the skin pores. However, most water that is absorbed through the skin, enters through the stratum corneum, the outermost layer of the skin. This is what makes skin pruney, when a long time is spent in the water. Human skin can absorb a wide variety of other chemicals, as well. This is why the delivery of some medications is accomplished using a patch.
Sweat
sweat
Perspiration is the liquid body waste excreted by the sweat glands in the dermis of the skin.