On a labeled diagram of the dorsal root ganglion, which label would indicate the capsule surrounding the ganglion?

On a labeled diagram of the dorsal root ganglion, which label would indicate the capsule surrounding the ganglion?

• A. Satellite cell
• B. Capsule of dorsal root ganglion
• C. Dorsal root ganglion
• D. Lipofuscin

Answer: (B)

Dorsal root ganglia are clusters of sensory neuron cell bodies surrounded by a protective outer layer. That outer coat is a connective tissue capsule that encases the entire ganglion, sitting outside the neuronal and satellite-cell arrangement. So the label that corresponds to this enclosing capsule is the capsule of dorsal root ganglion. Satellite cells are the small glial-like cells wrapping individual neuron cell bodies inside the ganglion, not the outer boundary. Lipofuscin is pigment that can accumulate inside aging neurons, not a surrounding capsule. Labeling the dorsal root ganglion would point to the whole ganglion itself, not the enclosing capsule.

Dorsal root ganglia are clusters of sensory neuron cell bodies surrounded by a protective outer layer. That outer coat is a connective tissue capsule that encases the entire ganglion, sitting outside the neuronal and satellite-cell arrangement. So the label that corresponds to this enclosing capsule is the capsule of dorsal root ganglion.

Satellite cells are the small glial-like cells wrapping individual neuron cell bodies inside the ganglion, not the outer boundary. Lipofuscin is pigment that can accumulate inside aging neurons, not a surrounding capsule. Labeling the dorsal root ganglion would point to the whole ganglion itself, not the enclosing capsule.