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Question

In reflex action, the reflex arc is formed by

A
Brain spinal cord muscles
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B
Receptor spinal cord muscles
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C
Muscle receptor brain
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D
Muscles spinal cord receptor
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Solution

The correct option is B Receptor spinal cord muscles
In reflex actions, a reflex arc is formed by impulses from the receptor reaching the spinal cord and the appropriate reflex impulse then being sent to the muscles by the spinal cord. The impulse is not sent to the brain, to reduce response time.

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