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

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

Flashcards in Ch 13 Lec 3 - Nervous System + Ch 14 Lec 1 - Spinal Cord and Spinal Nerves Deck (61):
1

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

facilitation

2

cns structure that is a collection of neuron cell bodies

nuclei

3

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

center

4

cns structure that are bundles of axons

tracts

5

pns structure that is a collection of neuron cell bodies

ganglia

6

pns structure that is a bundle of axons

nerves

7

spinal cord is a slender nerve blank

column

8

size of spinal cord

45 cm long

9

spinal cord has blank matter

gray and white

10

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

central canal

11

two grooves of spinal cord

anterior median fissure, posterior median sulcus

12

two swollen regions of the spinal cord

cervical enlargement, lumbar enlargement

13

inferior most tip of the spinal cord; cone shaped

conus medullaris

14

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

cauda equina

15

inferior most spinal nerve

filum terminale

16

this consists of cell bodies, dendrites, and synapses

gray matter

17

projections of gray matter are called blank

horns

18

cell bodies are organized into blank like blank and blank

nuclei, sensory, motor

19

three interior horns

posterior, anterior, lateral

20

five white tracts/columns

posterior, anterior, lateral, ascending tract, descending tract

21

white matter tract that is sensory

ascending

22

white matter tract that is motor

descending tract

23

membranes covering the central nervous system

meninges

24

meninges are similar in both blank and blank

brain, spinal cord

25

meninges are split into layers called blank which means mother

mater

26

vertebrae consist of vertebral blank

arches

27

space between meninges and vertebra and contains blood vessels and adipose

epidural space

28

meninges connect to blank covering of spinal nerves

connective tissue

29

the tough mother meninge that is very durable

dura mater

30

dura mater is blank to epidural space

deep

31

dura mater is superficial to blank

subdural space

32

spidery mother meninge

arachnoid mater

33

arachnoid mater is superficial to blank

subarachnoid space

34

connective tissue looks like a spider web in this mater

arachnoid

35

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

pia mater

36

pia mater forms part of blank

filum terminale

37

the subarachnoid space is with blank

csf

38

parts of spinal meninges

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

39

how many pairs of spinal nerves

31

40

how many cervical spinal nerve pairs

8

41

how many thoracic spinal nerves pairs

12

42

how many lumbar spinal nerves pairs

5

43

how many sacral spinal nerves pairs

5

44

how many coccygeal spinal nerves pairs

1

45

two nerve componenets

dorsal root, ventral root

46

axons of dorsal root are called blank

dorsal root ganglion

47

dorsal roots are usually blank

sensory

48

ventral root has no blank and is usually blank

ganglion, motor

49

roots merge to form blank

nerves

50

spinal nerves are usually blank and blank

sensory and motor

51

all roots go through the blank

intervertebral foramina

52

surrounds the entire nerve and is a connective tissue

epineurium

53

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

perineurium

54

ct that surrounds each individual axon of each neuron

endoneurium

55

offshoots of a nerve once it exits the vertebra

rami

56

three types of rami

dorsal ramus, ventral ramus, ramus communicantes

57

a splitting in the ramus separating sensory and motor fibers

rami communicantes

58

two splits of the rami communicantes

white, gray

59

sensory innervation by specific spinal nerves

dermatomes

60

spinal cord damage will result in loss of blank in dermatome

sensation

61

the method of detection of nerve damage in humans

dermatomes