There are pairs of spinal nerves and pairs of cranial nerves in human body.

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Solution

The correct option is D 12
There are 31 pairs of spinal nerves which arise from 31 segments of spinal cord and leave the cord in invertebratal spaces. Each spinal nerve is a combination of nerves from the dorsal root and the ventral root. Cranial nerves originate in the brain or brain stem and have 12 pairs. They have numbers in the order in which they leave the brain.

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_____ pairs of cranial nerves and ______ pairs of spinal nerves are present in the human body.

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