Coccygeal Spinal Roots & Ganglion (Left)
Radicis et ganglia spinalia coccygeus
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One of the thirty-one pairs of spinal nerves emerges from the coccygeal region. These pair of nerves are termed the coccygeal nerves.
The coccygeal nerves are mixed nerves, as each nerve is formed by the union of a posterior (sensory nerve fibers) and anterior root (motor nerve fibers). Located at the proximal end of each posterior root is a spinal ganglion. Ganglia contain the cell bodies of sensory nerve fibers. The coccygeal nerves terminate by dividing into anterior and posterior rami.
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Spinal Nerve
A spinal nerve is comprised by a ventral root that originates from the cord's anterolateral aspect and a dorsal root from the posterolateral aspect, both of which are continuous with the spinal cord.
