What is a negative feedback system in the human body?
The human body is only capable of withstanding small degrees of internal changes. Negative feedback systems fight against external conditions that threaten the body’s internal function.HomeostasisIn order to understand negative feedback, one must first understand homeostasis. Homeostasis is the principle that the state of certain bodily conditions–such as temperature, blood pressure, glucose levels and respiration rate–must remain constant for health and survival.Negative Feedback FunctionNegative feedback systems prompt the body to alter its function to compensate for an external threat. For example, if the temperature drops, blood begins to flow away from the extremities and into the body’s core in an effort to counteract heat loss.ReceptorsThe negative feedback process begins with receptors. Receptors monitor internal conditions like blood pressure and metabolism, and sound the alarm when changes occur.Control CenterReceptors send information about internal changes to a control ce
