Homeostasis-the ability to maintain a relatively stable internal environment in an ever-changing outside world.
It is basically the body's ability to keep everything balanced including breathing, heart rate, temperature, etc.
When one part of the body responds to a stimuli, then the rest of the body follows soon after. As in if you get a paper cut and it starts to bleed, the reaction would be for the blood at the surface of the cut to start clotting, then the heart continues to pump blood back to the whole body so basically the blood lost is getting refilled.
