Physiology (from Greek, physis, "nature, origin"; and, -logia)'s the study of the mechanical, physical, and biochemical functions of living organisms. Physiology has traditionally been divided between plant physiology and animal and all living things physiology but the principles of physiology are universal, no matter what particular organism's being studied. For example, what's learned about the physiology of yeast cells may also apply to human cells. The field of animal physiology extends the… (More on Physiological)