TOPIC:
PHYSIOLOGICAL FUNCTIONS OF THE BODY
, PHYSIOLOGICAL FUNCTIONS OF THE BODY
Physiology is the study of how the human body works. It
describes the chemistry and physics behind basic body
functions, from how molecules behave in cells to how
systems of organs work together. It helps us understand
what happens in a healthy body in everyday life and
what goes wrong when someone gets sick.
Body functions are the physiological or psychological
functions of body systems. The body's functions are
ultimately its cells' functions. Survival is the body's most
important business. Survival depends on the body's
maintaining or restoring homeostasis, a state of relative
constancy, of its internal environment.