homeostatsis

anatomy

study of internal and external structures of the body and the physical relationships among body parts

physiology

the study of how organisms perform their vital functions

Homeostasis

the maintenance of a relatively internal environment

homeostatic regultion

adjustments of physiological systems to preserve homeostasis

receptor

a sensor that recognizes a change in the environment

control center

processes info from sensor

effector

produces an activity

extrinsic regulation

nervous system or endocrine system

sends signals to many parts of the body causing widespread response

autoregulation( intrinsic)

cells, tissues, or organ systems

can sense many environmental changes

can activate response mechansims that adjust activity

localized response

negative feedback

most examples of homeostasis

receptor senses stimulus

control center activates effector

effector produced a response to correct situation

positive feedack

receptor sense stimulus

control center activates effector

effector produces a response that enhances the conditions

EX: childbirth, throwing up