ABSTRACT
Regulation of the body’s homeostasis is partially under the control of the endocrine system. This is a system whereby specialized tissues or glands elaborate hormones (from the Greek “to urge on”) into the blood stream for distribution within the body where they regulate organ and cellular function in a “feedback” relationship. Without this constant feedback, the human body would be a disorganized mob of 50 trillion cells. Endocrine transmission is relatively slow and diffuse. In comparison, neuronal transmission is rapid and discrete; sometimes delivering a speci* c signal to an individual cell.
