Reflex Action
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.
The spinal cord is the Centre of reflex action : Reflex actions are produced by reflex arcs, which may be formed anywhere along the spinal cord, nearest to the receptor and effector.
A reflex arc is formed by a sensory nerve and a motor nerve joined by a connecting nerve present in the _______________________. | |||
| Right Option : C | |||
| View Explanation | |||
What is the missing part of the reflex arc in the path given below ? | |||
| Right Option : B | |||
| View Explanation | |||
In reflex action the reflex arc is formed by _____________ | |||
| Right Option : B | |||
| View Explanation | |||
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