Where do the cell bodies of peripheral nerves reside?

Where do the cell bodies of peripheral nerves reside?

• A. Dorsal root ganglion (DRG)
• B. Ventral horn of the spinal cord
• C. Dorsal horn of the spinal cord
• D. Peripheral nerves themselves

Answer: (A)

Cell bodies of peripheral nerves reside in the dorsal root ganglia. Sensory neurons have their cell bodies in these ganglia along the dorsal roots near the spinal cord, with peripheral processes reaching sensory receptors and central processes entering the spinal cord. In contrast, motor neuron cell bodies are located in the ventral horn of the spinal cord, and the dorsal horn contains interneurons, not the cell bodies of peripheral neurons. Peripheral nerves are made of axons, not cell bodies, so they don’t house the neuronal cell bodies themselves.

Cell bodies of peripheral nerves reside in the dorsal root ganglia. Sensory neurons have their cell bodies in these ganglia along the dorsal roots near the spinal cord, with peripheral processes reaching sensory receptors and central processes entering the spinal cord. In contrast, motor neuron cell bodies are located in the ventral horn of the spinal cord, and the dorsal horn contains interneurons, not the cell bodies of peripheral neurons. Peripheral nerves are made of axons, not cell bodies, so they don’t house the neuronal cell bodies themselves.