2.75 Urine

2.75 recall that urine contains water, urea and salts

Urine consists of Salts, Water and Urea.

The Salts and Water are removed as part of the Osmoregulation process to maintain a isotonic tissue fluid with the cells in the body, and the removal of Urea is part of the excretion of metabolic waste.

The composition of Urine varies, depending on the conditions of the person.