Spinal Cord Exam 3

Question 1

The spinal cord is apart of what system

Answer 1

Central nervous system

Question 2

The spinal cord is a link between the

Answer 2

Brain and the rest of the body

Question 3

The spinal cord is protected by the

Answer 3

Vertebral canal and meninges and CSF

Question 4

The CSF is housed in the

Answer 4

Subarachnoid space

Question 5

Where does the spinal cord end?

Answer 5

At L1 level of the vertebral column, conus medullaris

Question 6

Mostly neuronal cell bodies on inside, butterfly shaped

Answer 6

Gray matter

Question 7

Posterior wings are

Answer 7

Dorsal horns

Question 8

Anterior wings are

Answer 8

Ventral horns

Question 9

White matter is mostly

Answer 9

Myelinated axons on outside

Question 10

In unipolar neurons, the cell body has a

Answer 10

Single process attached

Question 11

What divides the peripheral and central process

Answer 11

Single process

Question 12

Carries sensation from skin to cell body

Answer 12

Peripheral process

Question 13

Carries information away from cell body to spinal cord

Answer 13

Central process

Question 14

In unipolar neurons, cell bodies are located…

Answer 14

Outside the spinal cord and form ganglia

Question 15

In multipolar neurons, these neurons have a

Answer 15

Single axon and many dendritic processes

Question 16

Relay impulses to muscles, glands, or other neurons

Answer 16

Multipolar

Question 17

Functional classification of neurons

Answer 17

Sensory, motor, or interneurons

Question 18

Also referred to as afferents

Answer 18

Sensory neurons

Question 19

Sensory neurons characteristics

Answer 19

Carry sensation from skin to CNS,
unipolar neurons,
Cell bodies form ganglia

Question 20

In sensory neurons, their axonal processes….

Answer 20

Enter the spinal cord

Question 21

Motor neurons referred to as

Answer 21

Efferents, away from CNS

Question 22

Motor neurons are…

Answer 22

Multipolar, deliverer impulses to muscles and glands.

Question 23

In motor neurons, their cell bodies are in the…

Answer 23

Spinal cord and their axons project out to their targets

Question 24

Also referred to as association neurons

Answer 24

Interneurons

Question 25

Multipolar neurons and entirely located within the CNS

Answer 25

Interneurons

Question 26

Function of interneurons

Answer 26

Receive info from sensory neurons and decide what to do with it. May decide to send the info up to the cerebral cortex for awareness or to motor neurons for motor response.

Question 27

Dorsal horns are comprised of cell bodies of

Answer 27

Interneurons, which receive input from afferents

Question 28

Ventral horns are comprised of cell bodies of

Answer 28

Motor neurons which deliver impulses to muscles and glands

Question 29

Clusters of cell bodies of unipolar neurons are…

Answer 29

Dorsal root ganglia

Question 30

Comprised of central processes of unipolar neurons

Answer 30

Dorsal roots

Question 31

Comprised of axons of motor neurons

Answer 31

Ventral roots

Question 32

Spinal nerves are where

Answer 32

Dorsal roots and ventral roots join

Question 33

Spinal nerves contain the….

Answer 33

Peripheral processes of unipolar neurons and axons of motor neurons

Question 34

Region of the spinal cord with a pair of spinal nerves attached to it

Answer 34

Spinal cord segment

Question 35

The spinal cord is protected by the same…

Answer 35

3 meninges found around the brain, and CSF

Question 36

In the spinal cord, the pia matter is attached to the

Answer 36

Surface of spinal cord

Question 37

In spinal cord, arachnoid mater is __ around the spinal cord with…

Answer 37

Loose, subarachnoid space containing CSF

Question 38

In spinal cord, the dura mater is

Answer 38

The thick outer layer

Question 39

Spinal nerves pass through the..

Answer 39

Intervertebral foramen

Question 40

The spinal cord has segments defined by the…

Answer 40

Attachment of a pair of spinal nerves

Question 41

There are how many cervical segments?

Answer 41

8

Question 42

The thoracic region has how many pairs of spinal nerves

Answer 42

12

Question 43

What region of spinal cord provides most of the innervation of the upper extremities

Answer 43

Cervical

Question 44

What region of the spinal cord provides the most innervation of the lower extremities and what region contributes to the lower extremities

Answer 44

``` Most= lumbar Contributes= sacral ```

Question 45

The lumbar region has how many pairs of spinal nerves

Answer 45

5

Question 46

The sacral region of spinal cord has how many pairs of spinal nerves

Answer 46

5

Question 47

One pair of spinal nerves for sensory around anus

Answer 47

Coccygeal region

Question 48

What regions are enlarged for the extremities

Answer 48

Cervical and lumbar

Question 49

The spinal cord ends at the

Answer 49

Conus medullaris, L1

Question 50

The spinal cord has a collection of

Answer 50

Nerve roots at the end called cauda equina

Question 51

Order of spinal cord regions….

Answer 51

``` Cervical Thoracic Lumbar Sacral Coccygeal ```

Question 52

Spinal nerves leave the…

Answer 52

Vertebral canal by passing through intervertebral foramina

Question 53

Conus medullaris

Answer 53

End of spinal cord

Question 54

Collection of ventral and dorsal roots

Answer 54

Cauda equina

Question 55

In a newborn, the spinal cord fills the

Answer 55

Vertebral canal and spinal nerves pass laterally through the intervertebral foramina

Question 56

Into adulthood, the vertebral column continues to….

Answer 56

Lengthen after spinal cord has reached its full length

Question 57

In an adult, the spinal cord fills closer to the…

Answer 57

End, the spinal nerves have to descend within the vertebral canal before they can pass through the intervertebral foramen

Question 58

Interior end of the spinal cord

Answer 58

Conus medullaris

Question 59

conus medullaris is located between

Answer 59

L1 and L2 vertebrae

Question 60

Extension of pia mater off conus medullaris is called

Answer 60

Filum terminale

Question 61

Horses tail, comprised of nerve roots from interior end of spinal cord

Answer 61

Cauda equina

Question 62

Lumbar puncture, spinal tap, is performed below

Answer 62

L1 level, removes CSF from around spinal cord