Homeostasis+P6

Homeostasis is the ability to maintain a relatively stable internal environment in an every-changing external environment. When the body is having trouble maintaining the balance, disease or even death may occur. What an organism needs to maintain homeostasis- > The primary systems that maintain this balance in the body are:
 * 1) Nutrients
 * 2) Oxygen
 * 3) Water
 * 4) Body Temperature
 * 5) Atmospheric Pressure (Gases)
 * The Nervous System
 * The Endocrine System

Homeostatic Control Mechanisms-
 * 1) Stimulus-causes the imbalance within the internal environment (Ex: temperature)
 * 2) Receptors(sensors)- monitor the environment
 * 3) Receptors- Signals along the afferent pathways to the control center.

Two Negative Feedback Mechanisms: Ex) Starvation->Low Blood Glucose->Pancreas Converts Glycogen into Glucose->Normal Blood Glucose 2. Positive Feedback Loop: The initial stimuli causes an increasing reaction from the body. Ex) Nursing a Baby->Oxytocin and Prolactin produced in the Pituitary Gland->Increase Milk Production
 * 1) Negative Feedback Loop(most common): When the body is not in the optimal range it reacts to get back in the normal range