Main Page
From New World Encyclopedia
New World Encyclopedia integrates facts with values. Written by certified experts.
Featured Article: Book of Jeremiah
Rembrandt's portrait of Jeremiah
Popular Article: Sweat
Sweat or perspiration is a watery fluid excreted by the sweat (sudoriparous) glands of the skin of mammals. Sweat contains primarily water, but also salts and metabolic waste products—primarily sodium chloride, urea, lactic acid, and potassium ions. Sweat serves an excretory function for releasing excess water and waste products. In some animals, and in particularly humans, it also plays a role in regulating body temperature through evaporative cooling when the water in the sweat evaporates. The urocanic acid in sweat also may offer protection for the skin against ultraviolet radiation.
Did you know?
Abner Doubleday was once credited with the invention of baseball, but the story is now considered a myth by sports historians, and Alexander Cartwright is now recognized as the true inventor of baseball. (source: Alexander Cartwright)