Question

During reflex actions, why the nerve impulse is not taken to brain?Why spinal cord functions in ths case ?Also define reflex arc.

Answer 1

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Answer 2

A reflex arc is a neural pathway that controls an reflex action. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This characteristic allows reflex actions to occur relatively quickly by activating spinal motor neurons without the delay of routing signals through the brain, although the brain will receive sensory input while the reflex action occurs.