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Question

________ is the pathway of impulses to and from the spinal cord. 



A

response to external stimuli

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B

instantaneous response without thought

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C

Reflex route

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D

Reflex journey

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Solution

The correct option is A

Reflex arc


Reflex arc is the pathway of impulses to and from the spinal cord which helps in generating appropriate reflex actions. So it includes:
1. The receptor organ which receives the stimulus.
2. A sensory neuron which carries the impulse from the sensory organ to spinal cord.
3. A relay neuron/intermediate neuron which transmits the signal further.
4. A motor neuron which carries the impulse from spinal cord to the effector organ.
5. The effector organ.


Biology

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