Spinal Cord Structure and Function

Question 1

Middle meninx; web-like

Answer 1

arachnoid mater

Question 2

Tough, outer meninx

Answer 2

dura mater

Question 3

Space filled with adipose tissue

Answer 3

epidural space

Question 4

thin meninx intimate with spinal cord

Answer 4

pia mater

Question 5

contains cerebrospinal fluid

Answer 5

subarachnoid space

Question 6

extension of pia mater attaching to dura

Answer 6

denticulate ligaments

Question 7

contains cell bodies and unmyelinated processes

Answer 7

grey matter

Question 8

shallow groove on dorsal side of spinal cord

Answer 8

posterior medial sulcus

Question 9

connects right and left halves of grey matter in spinal cord

Answer 9

gray commissure

Question 10

sensory branch of spinal nerve entering spinal cord

Answer 10

posterior root ganglion

Question 11

tapered end of spinal cord

Answer 11

conus medullaris

Question 12

motor branch of spinal nerve exiting spinal corc

Answer 12

anterior root

Question 13

contains sensory neuron cell bodies

Answer 13

posterior root ganglion

Question 14

collection of spinal nerves that arise from inferior end of spinal cord

Answer 14

cauda equina

Question 15

contains myelinated axons

Answer 15

white matter

Question 16

contains somatic motor neuron cell bodies

Answer 16

anterior gray horn

Question 17

space in centre of spinal cord that contains cerebrospinal fluid

Answer 17

central canal

Question 18

bulge in spinal cord containing cell bodies of motor neurons supplying upper limb

Answer 18

cervical enlargement

Question 19

wide, deep groove on ventral side of spinal cord

Answer 19

anterior median sulcus

Question 20

extension of the pia mater that attaches to the coccyx

Answer 20

filam terminale ligaments

Question 21

bulge in the spinal cord from T9-T12

Answer 21

lumbar enlargement

Question 22

order of structures through which sensory impulses pass as they enter the spinal cord and travel toward the brain (1-5)

Answer 22

1. spinal nerve
2. posterior root ganglion
3. posterior root
4. posterior gray horn
5. white column

Question 23

order of structures through which motor impulses pass as they descend from the brain and leave the spinal cord (1-4)

Answer 23

1. white column
2. anterior (ventral) gray horn
3. anterior (ventral) root
4. spinal nerve