Chap 14- Part 1

Question 1

What is the total number of pairs of spinal nerves

Answer 1

.

Question 2

How many pairs of spinal nerves are in each of the five anatomic divisions of the spinal cord?

Answer 2

.

Question 3

Functions of cervical and lumbosacral enlargements

Answer 3

Cervical - houses neurons that innervate the shoulder and upper limbs

Lumbosacral - houses the neurons that innervate pelvis and lower limbs

Question 4

What is the one exception in terms of the number of spinal nerves matching the number of vertebrae in a particular body region

Answer 4

Cervical vertebrae

Question 5

Five atomic subdivisions of the spinal cord

Answer 5

Cervical

Thoracic

Lumbar

Sacral

Coccygeal

Question 6

How does the one exception take place

Answer 6

Because we start at the top of the atlas and all the nerves are in between the vertebrae so the 8th pair is in between c7 and t1

Question 7

What are spinal cord meninges

Answer 7

Structures and spaces encircling the spinal cord

Question 8

What are three spaces associated with spinal cord meninges

Answer 8

Epidural space

Subdural space

Subarachnoid space

Question 9

Which space associated with spinal cord meninges contains CSF

Answer 9

Subarachnoid space

Question 10

What is the best location of the spinal cord to have a lumbar puncture (spinal tap)

Answer 10

Just above or below L4

Question 11

The spinal cord extends inferiorly from the brain at the Foramen magnum through the vertebral canal and ends at the level of ______ vertebra

Answer 11

L1 vertebra

Question 12

Identify conus medullaris

Answer 12

End marking the end of spinal cord proper

Question 13

Identify filium terminale

Answer 13

Thin strand of pia mater

Question 14

Identify denticulate ligaments

Answer 14

Triangular extensions of spinal pia mater

Attach to dura mater

Question 15

What is cauda equine

Answer 15

Nerve roots projecting from spinal cord

Question 16

Where is gray mater in spinal cord

Answer 16

Inner region of vertebrae

Question 17

The gray matter may be subdivided into the following components:

Anterior horns that house (cell bodies / axons) of (somatic motor / sensory neurons)

Answer 17

Cell bodies

Somatic motor neurons

Question 18

The gray matter may be subdivided into the following components:

Lateral horns that house cell bodies of ______ _______ neurons

Answer 18

Visceral motor

Question 19

The gray matter may be subdivided into the following components:

Lateral horns are found in T?-L? Parts of spinal cord only

Answer 19

Thoracic and lumbar

Question 20

The gray matter may be subdivided into the following components:

Posterior horn that house axons of (somatic motor / sensory) neurons and the cell bodies of _______

Answer 20

Sensory

Interneurons

Question 21

The cell bodies of the sensory neurons connected to the spinal cord are located in the dorsal root _______

Answer 21

Ganglion

Question 22

What is the gray commisure

Answer 22

Connects masses of gray matter

Encloses central canal

Bridge portion of gray matter

Question 23

Location of white matter in spinal cord

Answer 23

Outside the Gray matter center

Question 24

Name three anatomic divisions of white matter

Answer 24

Funiculi

Anterior white commisure

Tracts

Question 25

General composition of:

Funiculi

Answer 25

Long ropes

Areas of white matter on spinal cord sides

Question 26

General composition of:

Anterior white commisure

Answer 26

Interconnects anterior funiculi

Question 27

General composition of:

Tracts

Answer 27

Bundles of axons

Question 28

What canal does he grey commisure surround

Answer 28

Central canal

Question 29

A conduction pathway consists of a tract and a nucleus. A tract is defined as?

Answer 29

Axon bundle

Question 30

A conduction pathway consists of a tract and a nucleus. A nucleus is a?

Answer 30

Collection of neuron cell bodies