Title - positive and negative feedback systems

HOMEOSTASIS According to totora .......... Homeostasis bathroom be defined as the groom in which the consistences home(a) milieu remains constant, at heart physiological limits. Homeostasis is a dynamic condition as the bodys equilibrium forefront crowd out change over a narrow-minded range that is congruous with maintaining life. E.g., the level of glucose in the blood does not normally illume below 70mg of glucose per 100ml of blood. Each body complex body part helps to contribute to keep the internal environment within its normal limits. For example, if the level of blood glucose within the drops then the body compensates it by using fats stores as a reserve supply of glucose physical structure mentally ills An important aspect of homeostasis is maintaining the volume and root of body fluid. The fluid within cells is called intracellular fluid (ICF). The fluid extraneous the body cell is called extracelluar fluid (extracellular fluid). Dissolved in the ICF a nd ECF are substances indispensable to maintain life much(prenominal)(prenominal) as O2, nutrients, proteins and electrally charged ions. Bernard predicted - the proper functioning of the body depends on precise dominion of the composition of the surrounding fluids of cells, known as interstitial fluid (internal environment). The composition of interstitial fluid changes as substances move in and out of the cell. For example, there is an mass meeting of materials crossways the capillary walls.

This exchange of movement in both directions provides the capillary with much needed ions such as glucose and O2 to tissue cells and removes wastes such as carb! onic acid gas from interstitial fluid. Control of homeostasis Homeostasis in the body is continually be disrupted. The disruption may come from the external environment such as the lack of O2 or the lack of heat. In virtually cases the disruption of homeostasis is mild and temporary and the body cells can concern the internal environment. If you want to get a lavish essay, recite it on our website: OrderCustomPaper.com

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