Homeostasis is the ability of the body to maintain its stable internal status thus keeping the overall balance of the system. It works with mechanisms that release chemicals in the body through certain processes to regulate the need of the body during certain situations.
Positive feedback – quite not normal than its negative counterpart, positive feedback are mechanisms designed to deviate or enhance the output created by a stimulus which was activated. Meaning, they go over the homeostasis.
Examples: (1) Blood clotting happens when the systems pushes its platelet production when a wound is created. (2) Oxytocin level are increased during childbirth so as to accompany skin contractions.
Negative feedback – is the action of the system that reduces the action that brings back any action to its normal condition or state.
Example: temperature control. The hypothalamus can detect minor changes in the body temperature (around 37 degrees). When those variations occur, the body is doing something to maintain it. When the body temperature slightly increases, it produces sweat to cools the body. When is decreases, it signals the production of certain chemical to make the muscles shiver thus increasing the temperature.