Homeostasis: Positive And Negative Feedback System

Homeostasis is the tendency of the human body to maintain internal stability, owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb its normal condition or function. An example of this would be the body maintaining a body temperature of 98.6 degrees Fahrenheit even though temperatures outside the body maybe much high or lower than that. There are 2 different kinds of feedback systems; positive and negative. A positive feedback system increases the action of a system. Positive feedback is a cycle that can continue to increase your body’s response to a stimulus until a negative feedback mechanism takes over. An Example of this is child birth. During a birth a hormone called oxytocin is released,

An example of this would be the body maintaining a body temperature of 98.6 degrees Fahrenheit even though temperatures outside the body may be much higher or lower than that. Homeostasis is important in order for us to maintain good health and to fight off illness. Negative feedback mechanism occurs in response stimulus. Often it causes the output of a system to be lessened; the feedback stabilizes the system. This is homeostatis. An Example of this is when body temperature is too high or too low. When your body temperature becomes too high two mechanisms kick in and the body begins to sweat. As the sweat cools, it causes evaporative cooling, while the blood vessels cause convective cooling, normal body temperature is then regained. The skin is the largest organ of the human body. The skin covers the external surface of our bodies and has three main functions: protection, regulation and sensation. The hair serves a number of functions including insulation, protection, friction buffer and redirection of water and sweat from the body. The primary function of sweat glands and perspiration is to maintain the body temperature. The primary function of oil glands is to protect the