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Ana > Ch 13 Lec 3 - Nervous System + Ch 14 Lec 1 - Spinal Cord and Spinal Nerves > Flashcards

Ch 13 Lec 3 - Nervous System + Ch 14 Lec 1 - Spinal Cord and Spinal Nerves Flashcards

1
Q

if a neuron is excited but still below threshold, it said to be in blank

A

facilitation

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2
Q

cns structure that is a collection of neuron cell bodies

A

nuclei

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3
Q

cns structure that is the collection of neuron cell bodies working together

A

center

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4
Q

cns structure that are bundles of axons

A

tracts

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5
Q

pns structure that is a collection of neuron cell bodies

A

ganglia

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6
Q

pns structure that is a bundle of axons

A

nerves

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7
Q

spinal cord is a slender nerve blank

A

column

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8
Q

size of spinal cord

A

45 cm long

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9
Q

spinal cord has blank matter

A

gray and white

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10
Q

hold down the center of spinal cord with continuous brain ventricles and both contain csf

A

central canal

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11
Q

two grooves of spinal cord

A

anterior median fissure, posterior median sulcus

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12
Q

two swollen regions of the spinal cord

A

cervical enlargement, lumbar enlargement

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13
Q

inferior most tip of the spinal cord; cone shaped

A

conus medullaris

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14
Q

means horse’s tail; bundle of nerves inferior to spinal cord

A

cauda equina

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15
Q

inferior most spinal nerve

A

filum terminale

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16
Q

this consists of cell bodies, dendrites, and synapses

A

gray matter

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17
Q

projections of gray matter are called blank

A

horns

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18
Q

cell bodies are organized into blank like blank and blank

A

nuclei, sensory, motor

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19
Q

three interior horns

A

posterior, anterior, lateral

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20
Q

five white tracts/columns

A

posterior, anterior, lateral, ascending tract, descending tract

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21
Q

white matter tract that is sensory

A

ascending

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22
Q

white matter tract that is motor

A

descending tract

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23
Q

membranes covering the central nervous system

A

meninges

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24
Q

meninges are similar in both blank and blank

A

brain, spinal cord

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25
Q

meninges are split into layers called blank which means mother

A

mater

26
Q

vertebrae consist of vertebral blank

A

arches

27
Q

space between meninges and vertebra and contains blood vessels and adipose

A

epidural space

28
Q

meninges connect to blank covering of spinal nerves

A

connective tissue

29
Q

the tough mother meninge that is very durable

A

dura mater

30
Q

dura mater is blank to epidural space

A

deep

31
Q

dura mater is superficial to blank

A

subdural space

32
Q

spidery mother meninge

A

arachnoid mater

33
Q

arachnoid mater is superficial to blank

A

subarachnoid space

34
Q

connective tissue looks like a spider web in this mater

A

arachnoid

35
Q

delicate mother that is a light layer adhering to the spinal cord

A

pia mater

36
Q

pia mater forms part of blank

A

filum terminale

37
Q

the subarachnoid space is with blank

A

csf

38
Q

parts of spinal meninges

A

vertebra, epidural space, dura mater, subdural space, arachnoid layer, subarachnoid space, pia mater, neural tissue

39
Q

how many pairs of spinal nerves

A

31

40
Q

how many cervical spinal nerve pairs

A

8

41
Q

how many thoracic spinal nerves pairs

A

12

42
Q

how many lumbar spinal nerves pairs

A

5

43
Q

how many sacral spinal nerves pairs

A

5

44
Q

how many coccygeal spinal nerves pairs

A

1

45
Q

two nerve componenets

A

dorsal root, ventral root

46
Q

axons of dorsal root are called blank

A

dorsal root ganglion

47
Q

dorsal roots are usually blank

A

sensory

48
Q

ventral root has no blank and is usually blank

A

ganglion, motor

49
Q

roots merge to form blank

A

nerves

50
Q

spinal nerves are usually blank and blank

A

sensory and motor

51
Q

all roots go through the blank

A

intervertebral foramina

52
Q

surrounds the entire nerve and is a connective tissue

A

epineurium

53
Q

ct that surrounds bundles of 10-100 axons (fascicle)

A

perineurium

54
Q

ct that surrounds each individual axon of each neuron

A

endoneurium

55
Q

offshoots of a nerve once it exits the vertebra

A

rami

56
Q

three types of rami

A

dorsal ramus, ventral ramus, ramus communicantes

57
Q

a splitting in the ramus separating sensory and motor fibers

A

rami communicantes

58
Q

two splits of the rami communicantes

A

white, gray

59
Q

sensory innervation by specific spinal nerves

A

dermatomes

60
Q

spinal cord damage will result in loss of blank in dermatome

A

sensation

61
Q

the method of detection of nerve damage in humans

A

dermatomes

Ana (40 decks)

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