Chapter 13 Flashcards Preview

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Flashcards in Chapter 13 Deck (35):
1

outer layer of spinal cord

dura mater

2

middle meningeal layer

arachnoid mater

3

inner meningeal layer

pia mater

4

the dura mater, arachnoid mater, and pia mater are collectively called the

meningeal layers

5

found in the dorsal root ganglia

cell bodies of sensory neurons

6

type of fibers found in dorsal root

sensory neurons

7

types of fibers found in ventral root

motor neurons

8

bundles that form from the joining of the dorsal root and the ventral root

spinal nerves

9

two types of fibers found in spinal nerves

sensory and motor

10

surrounds outer spinal nerves

epinerium

11

surrounds fascicles

perineurium

12

surrounds individual axons

endoneurium

13

where is cerebral spinal fluid found

subarachnoid space

14

withdraws CSF

lumbar puncture/spinal tap

15

viral or bacterial infection of meninges

meningitis

16

bilateral region of the skin, monitored by specific pair of spinal nerves

dermatome

17

caused by varicella-zoster virus

shingles

18

complex, interwoven network of nerve fibers that controls skeletal muscles

nerve plexus

19

four spinal plexus

cervical
brachial
lumbar
sacral

20

nerve that innervates the diaphragm and allows you to breathe by stimulating the diaphragm

phrenic nerve

21

where the phrenic nerve originates in the spinal cord

C3, C4, C5

22

basic neural reflexes, formed before birth

innate reflexes

23

triggered by sudden elongation of tendons

stretch reflexes

24

example of a stretch reflex

patellar

25

develop too much tension and keeps tendons from breaking

tendon reflex

26

withdrawal reflex (ex: grab hot pan)

flexor reflex

27

how does a crossed extensor reflex complement a flexor reflex

axons responding to pain cross to other side of spinal cord to control muscles on opposite side

28

curling of toes on adult foot

plantar reflex

29

fanning of toes on infants

Babinski reflex

30

if an adult displays the Babinski reflex, this is suspected

higher center or descending tract is damaged

31

moves a limb away from a painful stimulus

flexor reflex

32

prevents a muscle from exerting too much tension

tendon reflex

33

important in regulating muscle length, activated when a skeletal muscle lengthens

stretch reflex

34

what is not true about Babinski reflex?

plantar changes to Babinski by age 2

35

what reflex complements the flexor reflex by activating contralateral muscles

crosses extensor