Human Physiology - The Concept of Homeostasis

The Concept of Homeostasis

The term "homeostasis" refers to the maintenance of overall inner resistance in the body. Homeostasis stabilizes the body by regulating the internal environment. This is required for the body to function sufficiently. The Homeostatic process is essential for the survival of each cell, tissue, and body system. Homeostasis in a general sense refers to stability, balance or equilibrium. Maintaining a stable internal environment requires constant monitoring, mostly by the brain and nervous system. The brain receives information from the body and responds appropriately through the release of various substances like neurotransmitters, catecholamines, and hormones. Individual organ physiology furthermore facilitates the maintenance of homeostasis of the whole body e.g. Blood pressure regulation: the release of renin by the kidneys allow blood pressure to be stabilized (Renin, Angiotensinogen, Aldosterone System), though the brain helps regulate blood pressure by the Pituitary releasing Anti-Diuretic Hormone (ADH). Thus, homeostasis is maintained within the body as a whole, dependent upon its parts.