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Question

A reflex action does not involve

A
Neurons
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B
Brain
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C
Spinal cord
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D
Muscle fiber
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Solution

The correct option is B Brain
  • Reflex action is an involuntary and spontaneous movement in response to a stimulus.
  • The receptor sends signals through a sensory neuron to the spinal cord from there the signals are passed on to a motor neuron.
  • Such quick action occurs without the involvement of the brain.
So, the correct answer is 'Brain'.
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