LB 4-14

Question 1

Set of nerves that come from the spinal cord, part of the PNS

Answer 1

spinal nerves

Question 2

Names of all 31 spinal nerves

Answer 2

C1-C8, T1-T12, L1-L5, S1-S5, Co1

Question 3

Spinal cord ends where

Answer 3

about L1-L2

Question 4

Five regions of the spinal cord

Answer 4

cervical, thoracic, lumbar, sacral, coccygeal

Question 5

Why there is a difference between segments of spinal cord and vertebral regions

Answer 5

spinal nerves are named for where they exit

Question 6

Lumbar spine houses what nerves

Answer 6

nerves that go to legs and toes

Question 7

Enlargements are in the cervical and lumbar portions of the cord because

Answer 7

large amount of cell bodies to maintain fine motor control and high sensations of hands and feet

Question 8

Nerve roots projecting inferiorly from spinal cord

Answer 8

Cauda equina

Question 9

Not a nerve, does not exit neural canal, thin strand of pia mater, helps anchor conus medullaris to coccyx

Answer 9

Filum terminale

Question 10

Tapering end marking the end of the spinal cord

Answer 10

Conus medullaris

Question 11

Cluster of unipolar cell bodies of primary sensory neurons

Answer 11

posterior root ganglia

Question 12

Procedure for obtaining CSF in which needle goes into the subarachnoid space around L4

Answer 12

Lumbar puncture

Question 13

How to tell anterior and posterior horns

Answer 13

look for posterior root ganglia

Question 14

Gray matter in the spinal cord is divided how

Answer 14

Posterior, anterior, lateral horns

Question 15

White matter that goes up and down in the spinal cord is divided how

Answer 15

Posterior, later, and anterior funiculi

Question 16

For spinal nerves C1-C7, they are named for what

Answer 16

the bone below them

Question 17

For spinal nerve C8, it is located where

Answer 17

between C7 bone and T1 bone

Question 18

T1 spinal nerve and on down is named for what

Answer 18

the bone above it

Question 19

Dorsal ramus goes where

Answer 19

skin and muscles in back

Question 20

Anterior ramus goes where

Answer 20

everything in front of the back, muscles and skin

Question 21

Network of interweaving anterior rami of spinal nerves

Answer 21

nerve plexus

Question 22

Plexus that comes from C1-C4 and some of C5, controls muscles of the neck and diaphragm, major derivative nerve is phrenic nerve

Answer 22

Cervical plexus

Question 23

Phrenic nerve controls

Answer 23

diaphragm

Question 24

Plexus that comes from C5-T1, controls arms and shoulders, derivative nerves are radial and ulnar nerves

Answer 24

Brachial plexus

Question 25

Radial and ulnar nerves innervates

Answer 25

forearm and hands

Question 26

Plexus that comes from L1-L4, controls anterior thigh, derivative nerve is femoral nerve

Answer 26

Lumbar plexus

Question 27

Femoral nerve innervates

Answer 27

anterior thigh

Question 28

Plexus that comes from L4-S4, controls posterior and lower leg, derivative nerve is sciatic nerve

Answer 28

Sacral Plexus

Question 29

Largest nerve in the body that innervates most of leg, posterior and lower

Answer 29

sciatic nerve

Question 30

Primary pathway for sensory and motor nerve signals, secondarily responsible for some specific reflexes which are our quickest reactions to a stimulus

Answer 30

function of the spinal cord

Question 31

What is the length of the spinal cord at birth

Answer 31

9.6 in

Question 32

What is the length of the spinal cord at adulthood

Answer 32

16-18 in

Question 33

How many pairs of spinal nerves are there

Answer 33

31

Question 34

How many pairs of spinal nerves are there in the cervical part of the cord

Answer 34

8

Question 35

How many pairs of spinal nerves are there in the thoracic part of the cord

Answer 35

12

Question 36

How many pairs of spinal nerves are there in the lumbar part of the cord

Answer 36

5

Question 37

How many pairs of spinal nerves are there in the sacral part of the cord

Answer 37

5

Question 38

How many pairs of spinal nerves are there in the coccygeal part of the cord

Answer 38

1

Question 39

A network of interweaving anterior rami of spinal nerves. The anterior rami of most spinal nerves form _________ on both the right and left sides of the body

Answer 39

nerve plexuses

Question 40

What are the 5 spinal cord subdivisions

Answer 40

cervical part, thoracic part, lumbar part, sacral part, coccygeal part

Question 41

What is the tapered end of the spinal cord called

Answer 41

conus medullaris

Question 42

Collection of spinal nerves that arise from inferior end of spinal cord

Answer 42

cauda equina

Question 43

Extension of pia mater that attached spinal cord coccyx

Answer 43

filum terminale

Question 44

What does the filum terminale eventually become

Answer 44

Inferior anchor of the spinal cord

Question 45

Name the spinal cord meninges from most superficial to deep

Answer 45

dura mater, arachnoid mater, pia mater

Question 46

Space deep to the arachnoid mater that contains CSF

Answer 46

subarachnoid space

Question 47

What procedures are performed in the subarachnoid space of the spinal cord

Answer 47

lumbar puncture

Question 48

Matter in the spinal cord dominated by neuron cell bodies, dendrites, glial cells, and unmyelinated axons

Answer 48

gray matter

Question 49

Matter in the spinal cord composed primarily of myelinated axons that extend to and from the brain

Answer 49

white matter

Question 50

Four parts of the gray matter of the spinal cord

Answer 50

anterior horns, lateral horns, posterior horns, and the gray commissure

Question 51

Part of the gray matter of the spinal cord containing cell bodies of somatic motor neurons which innervate skeletal muscle

Answer 51

anterior horns

Question 52

Part of the gray matter of the spinal cord containing cell bodies of autonomic motor neurons which innervate cardiac muscle

Answer 52

lateral horns

Question 53

Part of the gray matter of the spinal cord containing axons of sensory neurons and cell bodies of interneurons

Answer 53

posterior horns

Question 54

Part of the gray matter of the spinal cord containing a horizontal bar of gray matter that surrounds a narrow central canal, contains unmyelinated axons, serves as communication route between right and left sides of the gray matter

Answer 54

gray commissure

Question 55

Also known as the ependymal canal, is the cerebrospinal fluid-filled space that runs longitudinally through the length of the entire spinal cord

Answer 55

central canal

Question 56

What functional type of neuron travels out the anterior root

Answer 56

Ventral/anterior root contains motor axons

Question 57

What functional type of neuron travels in through the posterior root

Answer 57

Dorsal/posterior root contains sensory axon

Question 58

What does the posterior root ganglion contain

Answer 58

Sensory nerve cell bodies

Question 59

Contains neuron cell bodies of sympathetic neurons

Answer 59

sympathetic trunk ganglion

Question 60

What does the phrenic nerve innervate

Answer 60

diaphragm

Question 61

Cervical plexus comes from what nerves

Answer 61

C1-C4

Question 62

Cervical plexus controls what

Answer 62

neck and diaphragm

Question 63

Major derivative nerve of cervical plexus

Answer 63

phrenic nerve

Question 64

Phrenic nerve controls what

Answer 64

diaphragm

Question 65

Brachial plexus comes from what nerves

Answer 65

C5-T1

Question 66

Brachial plexus control what

Answer 66

arms and shoulders

Question 67

Major derivative nerve of brachial plexus

Answer 67

radial and ulnar nerves

Question 68

Lumbar plexus comes from what nerves

Answer 68

L1-L4

Question 69

Lumbar plexus control what

Answer 69

anterior thigh

Question 70

Major derivative nerve of lumbar plexus

Answer 70

femoral nerve

Question 71

Sacral plexus comes from what nerves

Answer 71

L4-S4

Question 72

Sacral plexus controls what

Answer 72

posterior and lower leg

Question 73

Major derivative nerve of sacral plexus

Answer 73

sciatic nerve