What structure forms the capsule around the dorsal root ganglion?

What structure forms the capsule around the dorsal root ganglion?

• A. Capsule of dorsal root ganglion
• B. Endoneurium
• C. Perineurium
• D. Epineurium

Answer: (A)

The dorsal root ganglion is a cluster of sensory neuron cell bodies that is enclosed by a specialized protective sheath called the capsule of the dorsal root ganglion. This capsule is distinct from the usual connective tissue layers of nerves: endoneurium surrounds individual axons, perineurium encases nerve fascicles, and epineurium covers the entire nerve. Since the ganglion itself has its own surrounding capsule rather than being wrapped by one of those three layers, this capsule is the correct structure around it.

The dorsal root ganglion is a cluster of sensory neuron cell bodies that is enclosed by a specialized protective sheath called the capsule of the dorsal root ganglion. This capsule is distinct from the usual connective tissue layers of nerves: endoneurium surrounds individual axons, perineurium encases nerve fascicles, and epineurium covers the entire nerve. Since the ganglion itself has its own surrounding capsule rather than being wrapped by one of those three layers, this capsule is the correct structure around it.