Chapter 13 - The Spinal Cord and Spinal Nerves Notes Flashcards Preview

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Flashcards in Chapter 13 - The Spinal Cord and Spinal Nerves Notes Deck (73)
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2

Length of adult spinal cord

approx 45 cm

3

width of adult spinal cord

approx 14 mm

4

median sulcus

located on the posterior - longitudinal

5

median fissure

anterior

6

cord

gray matter in segments that deal with sensory and motor control of the limbs

7

cord in cervical region and lumbar

expanded areas of cord

8

name of end of cord

filum terminale extending from conus to second sacral segment

9

end of cord (shape)

tapered and conical

10

dorsal root ganglia

each spinal segment is associated with one

11

dorsal root

cell bodies of the sensory neurons that carry info into the spinal cord

12

ventral root

cell bodies of the motor neurons or output of the spinal cord

13

spinal nerve

mixture of sensory and motor fibers

14

how many pairs of spinal nerves coming off the spinal cord?

31 pairs

15

spinal meninges

is a series of specialized membranes surrounding the spinal cord.they provide support and protection to the spinal cord

16

layers of meninges

3dura materarachnoid materpia mater

17

dura mater

(tough mother) meningeal layerouter most covering of the cord

18

epidural space

space between dura mater and the wall of the vertebral canal.contains loose connective tissue, blood vessels, and adipose tissue

19

arachnoid mater

middle meningeal layer

20

subarachnoid space

space between arachnoid and pia mater. This is where CSF is contained

21

CSF

cervical spinal fluid

22

pia mater

(little mother) meningeal layerinner most layer. Various medical procedures and tests invade these spaces, and infectious processes.

23

nuclei

cell bodies of neurons in the gray matter

24

central canal

separates the anterior from the posterior aspect of the cord

25

posterior gray horns

contain sensory nuclei

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anterior gray horns

contain motor nuclei

27

lateral gray horn

only found in the thoracic and lumbar region of the cord. contains visceral motor nuclei

28

white matter

located on each side of the cord.organized into 3 regionsposterior anteriorlateral

29

posterior white column

lies between the posterior gray and the posterior median sulcus

30

anterior white columns

lie between the anterior gray and the anterior median fissure

31

lateral white columns

lie between the anterior and posterior columns.