the result or response enhances the original stimulus so that the response is accelerated. This feedback mechanism is "positive" because the change that results proceeds in the same direction as the initial change causing the variable to deviate further and further from its original value or range.

What happens in a negative feedback mechanism?

Negative feedback occurs when a system's output acts to reduce or dampen the processes that lead to the output of that system, resulting in less output. In general, negative feedback loops allow systems to self-stabilize. Negative feedback is a vital control mechanism for the body's homeostasis.

What is an example of a negative feedback mechanism?

Examples of processes that utilise negative feedback loops include homeostatic systems, such as: Thermoregulation (if body temperature changes, mechanisms are induced to restore normal levels) Blood sugar regulation (insulin lowers blood glucose when levels are high ; glucagon raises blood glucose when levels are low)