The spinal cord gives rise to pairs of spinal nerves that connect with specific muscles or organs. What are these nerves called?

• A. Cranial nerves
• B. Spinal nerves
• C. Autonomic nerves
• D. Peripheral nerves

Answer: (B)

These are spinal nerves. They arise as mixed nerves from the spinal cord, formed by the joining of a dorsal (sensory) and ventral (motor) root for each spinal segment. Each paired nerve connects to a specific muscle group and the skin around that segment, carrying motor commands to muscles and sensory information back to the CNS. They exit the spinal column through the intervertebral foramina and are organized by spinal level (cervical, thoracic, lumbar, etc.). This distinguishes them from cranial nerves, which come from the brainstem, and from autonomic nerves, which describe autonomic pathways but aren’t the direct nerves that originate from the spinal cord to the muscles and organs. Peripheral nerves is a broader term that includes these, but the precise term for nerves arising from the spinal cord and linking to muscles and organs is spinal nerves.