Homeostasis is the maintenance of a constant internal environment within an organism or cell to maintain balance, usually using a system feedback controls to stabilize health and proper functioning. Homeostasis can control stable water levels, blood sugar levels and temperature which are essential for survival as they can be changed depending on the external environment. Whether in a cold or hot climate, the body will adapt internally in order to continue functioning. The human body has receptors to detect stimuli, processing centers that receive the information, a coordinator that receives and controls the information from the receptor and triggers the response that will correct the change, and an effector that executes the action that will cause the change . Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay For example, body temperature should remain at 37 degrees Celsius because this is the temperature at which enzymes can function optimally. There are temperature receptors located in the skin that detect changes in the external environment and then this information is transmitted to the hypothalamus, as this is the processing center of the brain and it also has receptors capable of detecting changes in blood temperature. Each time the internal or external temperature changes, the hypothalamus triggers a change in the body's effectors (in this case the sweat glands and muscles) to maintain the correct temperature. If it discovers that the body is too hot, glands in the skin secrete sweat onto its surface to increase heat loss through evaporation. If the body is too cold, the muscles in the skin contract, causing the hair on the arms to stand up, which traps a layer of warm air close to the skin to prevent heat loss. This happens throughout the body in different ways in order to keep the body stable, otherwise the body may malfunction. The blood glucose level must be maintained in homeostasis, so when this level changes, the body responds to correct it. When there is an increase in blood glucose levels, for example by eating high glucose foods like fruits and vegetables, the increase in blood glucose levels will be detected by the beta cells present in the pancreas. The pancreas then releases insulin into the bloodstream, which helps the liver absorb glucose and break it down into glycogen for storage. Insulin increases the rate of respiration in the body's cells, thereby increasing the absorption of glucose, which helps regulate blood glucose levels. This is a negative feedback loop because the change detected was an increase and this needed to be reduced. When there is a decrease in blood glucose levels, for example by not eating for a whole day, the alpha cells in the pancreas will detect it. this change and glucagon will be released. Glucagon will facilitate the breakdown of glycogen stored into glucose in the liver and released into the bloodstream, thereby increasing blood glucose levels. This is a positive feedback loop because the change detected was a decrease, so an increase was needed to correct it. Keep in mind: this is just a sample. Get a personalized article from our expert writers now. Get a Personalized Test Hyperglycemia is when the glucose level is higher than the normal range (980 mg-100 mg/100 ml), this may be the result of diabetes...