Dorsal root ganglion is part of which anatomical system?

Dorsal root ganglion is part of which anatomical system?

• A. CNS
• B. PNS
• C. Both
• D. Neither

Answer: (B)

The dorsal root ganglion is a peripheral structure because it contains the cell bodies of primary sensory neurons located outside the brain and spinal cord. Although the axons of these neurons split into a peripheral branch to receive sensory signals and a central branch that enters the spinal cord, the ganglion itself sits in the dorsal root outside the CNS. So it belongs to the peripheral nervous system, not the central nervous system.

The dorsal root ganglion is a peripheral structure because it contains the cell bodies of primary sensory neurons located outside the brain and spinal cord. Although the axons of these neurons split into a peripheral branch to receive sensory signals and a central branch that enters the spinal cord, the ganglion itself sits in the dorsal root outside the CNS. So it belongs to the peripheral nervous system, not the central nervous system.