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what is reflex action?

Reflex Action is an activity performed by the peripheral nervous system of human brain in response to certain changes in the environment or the surrounding or by the body itself. It is mostly involuntary.  It is  a counter brain mechanism to handle different situations at different intervals. The sudden changes or activities, which involve in bringing the change, are termed as stimulus and the reaction or counter activity involuntarily performed by body under instructions from the brain is called as response and the whole phenomena is called as reflex action.


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