Introduction to physiology
What is physiology It is derived from 2 greek words Physis which means nature or origin logos which means study It is the science of studying the functional activities and their mechanisms in the biological body. We study physiology to understand the physical and chemical principles that underlie normal functions in order to cure the impairments. Homeostasis It is a well-regulated body It is the ability of an organism to maintain a stable internal during a fluctuating external environment. Extracellular fluid or the internal environment of the cell In the ECF are the ions and the nutrients needed by the cells to maintain life. Thus all cells live in the same environment also known as the ECF. (Internal environment of the body also called milieu Interieur). The body is sixty percent water and out of that 2/3rd is in the ICF and 1/3rd is in the ECF. The electrolyte composition of blood plasma, interstitial fluid, and intracellular fluid. Nutrients like oxygen, glucose, amino acids, ...