Homeostasis in the Human Body

Write an article on Homeostasis in the Human Body. It needs to be at least 1500 words. The mechanisms the body uses to maintain homeostasis are negative feedback and positive feedback. The negative feedback is the most common and the example of the negative feedback is the regulation of body temperature, blood pressure, and heart rate. For example, when the temperature of the body rises to certain degrees the negative feedback will take place where the body will try to cool itself and this is done when there is clear coordination between the hypothalamus and the affected organ (Brown & Goldstein 1986).The signal is sent to the brains via the receptors. When the brain receives the information it triggers the effectors and in this case, the production of sweat where the pores on the skin will have to open and the sweat comes for the cooling process to begin and this will automatically reduce the heart rate as well as the breathing rate. This process is similar to one with a thermostat where the thermostat is set at a certain temperature like 90 degrees for heating reasons. When the temperature reaches the mark, the thermostat will automatically go off until the temperature comes below the set margin. In addition, this process is a continuous one.When the body temperature falls below normal also called hypothermia, the first thing to be affected will be the brain and this may lead to one not thinking clearly. One will find difficulties in seeking medical attention due to thinking abnormally. The affected person will experience excessive shivering, breathing will be slowed, one may stumble, experience excessive fatigue, clumsiness, confusion, and unconsciousness.During any physical activity, the heart rate increases because the body requires a lot of oxygen in the body as it is used in the production of energy, and the oxygen is circulated in the body by the blood. Blood is also used as the coolant when it passes through the vessels. The blood is pumped through the whole body by the heart increasing the heart rate. The rate of breathing also increases during the physical activity because the level of oxygen needed in the body is also high as this oxygen is used in the production of energy that one requires during the physical activity.