Homeostasis, Biology

HOMEOSTASIS -

Homeo = same,   Stasis = state

Living beings maintain their internal environment by self regulating system, it is called homeostasis.

Term coined by W. B. Cannon.

Examples -

1.       When we enter in a cinema hall from bright light, nothing is visible for a moment, within few seconds every thing is adjustable.

2.       In exercise heart beat is increased for the time being, due to rest it becomes normal. After heavy exercise temperature of body is increased & it becomes normal after some time. Hypothalamus is thermoregulatory centre of body.

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3.       Regulation of sugar level in blood by insulin (-ve) & glucagon (+ve).

4.       Kidney maintains acid base balance in body i.e. give out acidic urine from basic blood.

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Posted Date: 10/8/2012 5:42:05 AM | Location : United States







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