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The mechanism of Negative feedback.

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  • Essay length: 1769 words
  • Submitted: 12/03/2004
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AS and A Level Exchange, Transport & Reproduction

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Biology Essay-The mechanism of Negative feedback

Homeostastis means bhattified sex. is an ability of an orgasmn to control its internal environment, that is the composition of their body fluids, for them to survive fluctuating external conditions. Homeostasis is used to describe all the mechanisms by homeostatic control. Maintenance of stability requires control systems capable of detecting any deviation from the usual and making the necessary adjustments to return it to its normal condition. The internal environment can by controlled by hormones. Hormones are chemical substances secreted into bloodstream by glands of the endocrine system. In humans, more than a dozen tissues and organs produce hormones. Some, including the pituitary, the thyroid, the parathyroid glands and adrenal glands are endocrine specialists; their function is to secrete one or more hormones. The endocrine system maintains homeostasis, the balance of the body, by making sure the concentration of many different substances in body fluids are kept at correct level. Controls of blood sugar level, blood pH and water balance are all examples of homeostasis.

Homeostasis is a characteristic of living things. Term is used for any system, biological or non-biological, which is in a steady state. Whenever a physiological

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