SPINAL CORD AND SPINAL LAMINA

Question 1

where does the spinal cord end?

what forms here

Answer 1

at the level of the body of the lumbar vertebrae 2

conus medullaris

Question 2

lumbar and sacral spinal nerves continue to form the portion of the spinal cord called the?

Answer 2

cauda equina (horses tail)

Question 3

the outer shell of the cord consisting of myelinated fibers?

Answer 3

white matter

Question 4

the central core consisting of nonmyelinated nerve cell bodies

Answer 4

gray matter

Question 5

what kind of neurons do posterior roots contain?

Answer 5

pseudounipolar sensory neurons whose cell bodies are found in specialized structures called dorsal posterior root ganglia

Question 6

what kind of neurons do anterior roots contain?

Answer 6

both somatic and visceral motoneurons

Question 7

what do the anterior and posterior roots come together to form?

Answer 7

spinal nerve or primary rami

Question 8

T/F, the primary rami divide into short posteriorly directed rami and long anteriorly directed rami.

Answer 8

T

Question 9

all of the rami are mixed nerves containing what kind of components?

Answer 9

muscular and cutaneous components

Question 10

these are aggregations of nerve cell bodies outside the CNS? what about in the CNS

Answer 10

ganglia

nuclei

Question 11

this comprises a system of ten layers of gray matter?

Answer 11

rexed laminae