Stability of Humans' Internal Environment Maintained by Homeostasis

Dynamic balancing is a systematic process in which variables are adjusted so that internal conditions are stable and kept reasonably constant. Depending on changes in internal and external conditions, the steady state is the process of maintaining the stability of the human internal environment. In order to adjust the state change, homeostasis requires a sensor to detect the change, and the effector eventually changes state, and there is a negative feedback connection between them. Therefore, dynamic balance eventually stabilizes health and function.

The biological definition of homeostasis is "the tendency of organisms or cells to regulate their internal environment and maintain balance through normal feedback control systems to stabilize health and function." In general, the body is in an in vitro state when its needs are satisfied and its function is normal. Household thermostat (heating system) is a good example of negative feedback mechanism. The thermostat includes a receiver (thermometer) and a control center. If the heating system is set to 70 degrees Fahrenheit, turn on the heating (effector) if the temperature is lower than 70 degrees Fahrenheit. After the heater heats the house to 70 degrees Fahrenheit, it effectively shuts down to maintain the desired temperature.

Animals need food to acquire energy and maintain homeostasis. Dynamic balance is the ability of the system to maintain a stable internal environment even in the face of external environmental changes. For example, the usual body temperature of the human body is 37 ° C (98.6 ° F). Even if the outside temperature is very high or it is cold, humans maintain this temperature. The energy necessary to maintain body temperature comes from food. Adenosine triphosphate (ATP) is the main energy currency within a cell. ATP stores energy in the phosphate bond and releases energy when the phosphodiester bond is broken. ATP is converted to ADP and phosphate group. ATP is produced by intracytoplasmic and oxidative reactions in mitochondria where carbohydrates, proteins and fats collectively undergo a series of metabolic reactions called cellular respiration.