Physiological function of the skin

- Aug 23, 2018-

3. Secretion and excretion. 

Sweat glands secrete sweat glands. Sebaceous glands secrete sebum. Sebum is mixed with sweat on the skin surface to form emulsified sebum film, moistening and protecting skin and hair. The skin excreted the metabolites produced by sweat, such as uric acid, urea, etc.