Human Physiology

Lesson 03 : Body Fluid Compartments

Introduction

Water constitutes about two-thirds of body of n adult man. It can be said that the organism is made up of water in which micelle molecules, and ions are dispersed. Water is distributed in the body in the form of several fluid compartments that are in state of dynamic equilibrium. Urinary system is deployed for continuous elimination of water soluble waste products from the body through urine. The substances like urea, uric acid, creatinine metabolic acids and surplus electrolytes are continuously eliminated through urine, thus maintaining a uniform environment for cell functioning. Skin being the largest single organ of the body comprises about 6% of body mass. Apart from protecting soft tissues from environmental injuries, the skin is also imparting useful functions of excretion, body temperature regulation and sensory organ.