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Thursday, September 2, 2010

Homeostatis

Homeostatis
Definition
Home means same and statis means state. So the regulatory mechanism which maintained the internal environment of a organism is called homeostatis.
Important Aspects of Homeostatis
There are three important aspects of homeostatis.
Osmoregulation
Thermoregulation
Excretion
Feed Back System
The check and balance system in a body is called feed back system. In a feed back system three organs are involved.
1. Receptor
The organ which receive any change in the internal environment of the body are called Receptor.
2. Effector
The central nervous system which send the message to a particular organ are called effector. Take part in particular action.
3. Central Nervous System
The receptor transfer message to a central nervous system such as brain.
Types of Feed Back System
There are two type of feed back system.
Positive Feed Back System
Negative Feed Back System
1. Positive Feed Back System
When there is a change in the internal environment and it is further increase by the process are called positive feed back system.
2. Negative Feed Back System
When there is a change in the internal environment and it is further decreased by the process called negative feed back system.

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