homeostasis

homeostasis is the process of maintaining balance in the body system. This is done through many different pashways and feedback loops. The most common is the negative feedback loop. The negative feedback loop is one that senses a change in homeostasis, and the body system responds by eliciting the opposite reaction. This can be demonstrated by body temperature, blood glucose, and many other systems. Positive feedback loops are much more rare. These are changes sensed in homeostatsis that promote more change as a response. Positive feedback loops are often used in the context of a negative feedback loop. An example of a postitve feedback loop is the blood clotting mechanism. This is within a negative feedback loop. This positive feedback loop works by sensing a change in blood pressure at the location of the cut and signaling for platelets to plug the cut. The platelets release a signal for more and more platelets to come help. This positive feedback loop is within the negative feedback loop that then signals for the stop of platlet signaling.