Importance Of Homeostasis

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“Homeostasis” was first described by Claude Bernard, a French physiologist in 1865. It can be defined as the ability of an organism or cell to maintain its internal environment by the system of feedback controls. Homeostasis preserves a stable internal environment as surroundings change inside and outside the cell and is a significant characteristic of living being. It also plays a key role in the survival and proper functioning of the human body. The maintenance of systems within a cell is called ‘homeostatic regulation’. Homeostasis is controlled by three different mechanisms: Osmoregulation, Thermoregulation and chemical regulation. These different mechanisms are carried out by different systems of the body such as endocrine system, nervous system, exocrine system, respiratory system, reproductive system. The endocrine system plays a crucial part in homeostasis by releasing hormones that regulate the cellular activities. Hormone can be defined as a chemical messenger, which travels through the blood to act on target cells/organs and is produced by cells or tissues.…show more content…
Concentration of urine is controlled by a hormone called Anti Diruetic Hormone (ADH), which is released into the bloodstream by the pituitary gland and has no affects in any tissue in the body but only on collecting ducts which has receptors for ADH. When ADH is in collecting ducts, it allows water in the urine to be taken back into the body in a specific area of the kidney. More water returns to the bloodstream, urine concentration rises, and water loss is reduced. ADH is controlled by negative feedback. When an individual drink a huge quantity of alcohol, body tends to be dehydrated because of ADH suppression. Similarly, drug such as Ecstasy works in opposite way as it increases ADH
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