Spinal Nerves Part 1 Flashcards
How many spinal nerves are in a typical person?
62 spinal nerves (31 pairs)
How many coccygeal nerve pairs are there typically?
1 pair
How many sacral nerve pairs are there typically?
5 pairs
What kind of axons are carried by the anterior roots of the spinal cord?
efferent axons
Which roots of the spinal cord are considered motor roots?
anterior (ventral) roots
Where are the cell bodies located of the axons carried by the anterior roots?
in the anterior (ventral) or lateral horns (if present)
How are the anterior roots of the spinal nerves attached to the spinal cord?
by a series of rootlets
Where are the cell bodies of the axons carried by posterior roots of the spinal nerves?
cell bodies are located in the dorsal root ganglion
What are the other acceptable names for the dorsal root ganglion?
posterior root ganglion or spinal ganglion
Where do the rootlets of the posterior root attach to the spinal cord?
posterolateral sulcus
Which roots of the spinal nerves can be considered sensory roots?
posterior (dorsal)
Where are spinal ganglia typically located?
either inside or just medial to the intervertebral foramen, beyond the dura mater
Where are the C1 and C2 spinal ganglia located?
on their respective vertebral arches
Where are sacral spinal ganglia located?
within the vertebral canal
Where are the coccygeal spinal ganglia located?
inside dura mater
