Reflex Action


 
 
Concept Explanation
 

Reflex Action

Reflex action: What happens when you touch something hot or your finger is pricked by a needle? You immediately pull your hand away, without even thinking why you are doing so. Such sudden involuntary responses to stimuli are examples of reflex action. The response may be different when your conscious thought process is involved. For example, when a doctor pricks you with an injection needle to inject a medicine into your arm, you do not withdraw your arm immediately. Your conscious thinking tells you that the medicine is being administered to cure your disease. In this case, a message from the spinal cord goes to the cerebrum, the thinking part of your brain, and your thinking brain directs your arm to bear the pain and not pull away.

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Sample Questions
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Question : 1

Which is not a reflex action?

Right Option : A
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Question : 2

The path followed by nerve impulse in reflex action is ________________

Right Option : C
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Question : 3

Reflex arch is path taken by ______________

Right Option : B
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