Chapter 12: Spinal Cord, Meninges, and Tissue

Question 1

spinal cord location

Answer 1

starts at the foramen magnum and ends at the sacrum. It is divided into secgments (cervical, thoracic, lumbar, and sacral)

Question 2

spinal nerves

Answer 2

31 pairs extending from the spinal cord

Question 3

cervical enlargement

Answer 3

supplies upper limbs

Question 4

lumbar enlargement

Answer 4

supplies lower limbs

Question 5

conus medullaris

Answer 5

tapered inferior end

Question 6

cauda equina

Answer 6

origins of spinal nerves extending inferiorly from lumbosacral enlargement and conus medullaris

Question 7

meninges

Answer 7

the layers that surround the brain and spinal cord

Question 8

dura mater

Answer 8

continuous with the epinerium of the spinal nerves. Is the thickest of the tissues.

Question 9

arachnoid mater

Answer 9

thin and wispy.

Question 10

pia mater

Answer 10

bound tightly to surface of brain and spinal cord

Question 11

epidural space

Answer 11

true space around the spinal cord that contains blood vessels, nerve roots, areolar connective tissue, and adipose tissue

Question 12

subdural space

Answer 12

only contains a small amount of serous fluid.

Question 13

subarachnoid space

Answer 13

contains some arachnoid mater, blood vessels, and cerebrospinal fluid

Question 14

commissures

Answer 14

connections between left and right halves

Question 15

roots

Answer 15

spinal nerves arise as rootlets and then combine to form roots

Question 16

dorsal root

Question 17

ventral root

Question 18

dorsal root ganglion

Answer 18

collections of cell bodies of unipolar sensory neurons

Question 19

anterior tracks

Answer 19

holding motor neurons