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

Question 1

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

Answer 1

facilitation

Question 2

cns structure that is a collection of neuron cell bodies

Answer 2

nuclei

Question 3

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

Answer 3

center

Question 4

cns structure that are bundles of axons

Answer 4

tracts

Question 5

pns structure that is a collection of neuron cell bodies

Answer 5

ganglia

Question 6

pns structure that is a bundle of axons

Answer 6

nerves

Question 7

spinal cord is a slender nerve blank

Answer 7

column

Question 8

size of spinal cord

Answer 8

45 cm long

Question 9

spinal cord has blank matter

Answer 9

gray and white

Question 10

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

Answer 10

central canal

Question 11

two grooves of spinal cord

Answer 11

anterior median fissure, posterior median sulcus

Question 12

two swollen regions of the spinal cord

Answer 12

cervical enlargement, lumbar enlargement

Question 13

inferior most tip of the spinal cord; cone shaped

Answer 13

conus medullaris

Question 14

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

Answer 14

cauda equina

Question 15

inferior most spinal nerve

Answer 15

filum terminale

Question 16

this consists of cell bodies, dendrites, and synapses

Answer 16

gray matter

Question 17

projections of gray matter are called blank

Answer 17

horns

Question 18

cell bodies are organized into blank like blank and blank

Answer 18

nuclei, sensory, motor

Question 19

three interior horns

Answer 19

posterior, anterior, lateral

Question 20

five white tracts/columns

Answer 20

posterior, anterior, lateral, ascending tract, descending tract

Question 21

white matter tract that is sensory

Answer 21

ascending

Question 22

white matter tract that is motor

Answer 22

descending tract

Question 23

membranes covering the central nervous system

Answer 23

meninges

Question 24

meninges are similar in both blank and blank

Answer 24

brain, spinal cord

Question 25

meninges are split into layers called blank which means mother

Answer 25

mater

Question 26

vertebrae consist of vertebral blank

Answer 26

arches

Question 27

space between meninges and vertebra and contains blood vessels and adipose

Answer 27

epidural space

Question 28

meninges connect to blank covering of spinal nerves

Answer 28

connective tissue

Question 29

the tough mother meninge that is very durable

Answer 29

dura mater

Question 30

dura mater is blank to epidural space

Answer 30

deep

Question 31

dura mater is superficial to blank

Answer 31

subdural space

Question 32

spidery mother meninge

Answer 32

arachnoid mater

Question 33

arachnoid mater is superficial to blank

Answer 33

subarachnoid space

Question 34

connective tissue looks like a spider web in this mater

Answer 34

arachnoid

Question 35

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

Answer 35

pia mater

Question 36

pia mater forms part of blank

Answer 36

filum terminale

Question 37

the subarachnoid space is with blank

Answer 37

csf

Question 38

parts of spinal meninges

Answer 38

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

Question 39

how many pairs of spinal nerves

Answer 39

31

Question 40

how many cervical spinal nerve pairs

Answer 40

8

Question 41

how many thoracic spinal nerves pairs

Answer 41

12

Question 42

how many lumbar spinal nerves pairs

Answer 42

5

Question 43

how many sacral spinal nerves pairs

Answer 43

5

Question 44

how many coccygeal spinal nerves pairs

Answer 44

1

Question 45

two nerve componenets

Answer 45

dorsal root, ventral root

Question 46

axons of dorsal root are called blank

Answer 46

dorsal root ganglion

Question 47

dorsal roots are usually blank

Answer 47

sensory

Question 48

ventral root has no blank and is usually blank

Answer 48

ganglion, motor

Question 49

roots merge to form blank

Answer 49

nerves

Question 50

spinal nerves are usually blank and blank

Answer 50

sensory and motor

Question 51

all roots go through the blank

Answer 51

intervertebral foramina

Question 52

surrounds the entire nerve and is a connective tissue

Answer 52

epineurium

Question 53

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

Answer 53

perineurium

Question 54

ct that surrounds each individual axon of each neuron

Answer 54

endoneurium

Question 55

offshoots of a nerve once it exits the vertebra

Answer 55

rami

Question 56

three types of rami

Answer 56

dorsal ramus, ventral ramus, ramus communicantes

Question 57

a splitting in the ramus separating sensory and motor fibers

Answer 57

rami communicantes

Question 58

two splits of the rami communicantes

Answer 58

white, gray

Question 59

sensory innervation by specific spinal nerves

Answer 59

dermatomes

Question 60

spinal cord damage will result in loss of blank in dermatome

Answer 60

sensation

Question 61

the method of detection of nerve damage in humans

Answer 61

dermatomes