Spinal Nerves Unit 5

Question 1

Anterior (ventral or motor) roots

Answer 1

efferent axons from cell bodies located in the anterior (ventral) or lateral (if present) horns

Question 2

preganglionic autonomic

Answer 2

sym T1-L2

para S2-S4

Question 3

. Posterior (dorsal or sensory) roots

Answer 3

located in the posterior root (dorsal root) (spinal

ganglion

Question 4

Spinal ganglia are typically located…

Answer 4

inside or just medial to the intervertebral foramen, beyond the dura mater

Question 5

Spinal ganglia exceptions

Answer 5

C1 and C2 ganglia
sacral ganglia located within vertebral canal
coccygeal located inside dura mater

Question 6

cauda equina composed of what Spinal ganglia

Answer 6

sacral & coccygeal ganglia

Question 7

cell bodies for these fibers sympathetic chain ganglia

Answer 7

postganglionic sympathetic fibers

Question 8

Mixed spinal nerves give off …

Answer 8

ascending, descending and transverse branches

Question 9

Mixed spinal nerve

Answer 9

Provide somatosensory and sympathetic supply to the dura, blood vessels, periosteum,
ligaments and intervertebral discs in the anterior and lateral portions of the canal

Question 10

Posterior (dorsal) rami are smaller than anterior except in …

Answer 10

except C1, S4 and S5