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Spinal ganglia
This is a dorsal root ganglion (DRG) from a chicken embryo (around stage of day 7) after incubation overnight in NGF growth medium stained with anti-neurofilament antibody. Axons growing out of the ganglion are visible.
Latin	g. sensorium nervi spinalis
Gray's	subject #185 750
System
MeSH	A08.340.390.340
A spinal nerve with its anterior and posterior roots.

In anatomy and neurology, the dorsal root ganglion (or spinal ganglion) is a nodule on a dorsal root that contains cell bodies of neurons in afferent spinal nerves.

All of the axons in the dorsal root convey somatosensory information, bringing sensory information into the brain and spinal cord. These neurons are of the pseudo-unipolar type, meaning they have two axons, one that conveys sensory information from the body to the soma of the neuron and one from the soma to the junction in the dorsal horn of the spinal cord.

The dorsal root ganglia lie along the vertebral columna by the spine.

Origin

The dorsal root ganglia develops in the embryo from neural crest cells.

See Also

• Ventral root

Additional images

Medulla spinalis

The formation of the spinal nerve from the dorsal and ventral roots|

Scheme showing structure of a typical spinal nerve.

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External links

• SUNY Figs 02:04-09
• Histology at Boston University 04401loa
• Photo of model
• Diagram

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