Nervous. Part 2 Quiz

Question 1

The spinal cord extends from the ………. to L2

Answer 1

Foramen magnum

Question 2

The spinal cord ends at L2 at the ……

Answer 2

Conus medullans

Question 3

It hangs from the conus medullaris

-its a bunch of spinal nerves

Answer 3

Cause equlina

Question 4

……… of spinal nerves per section

Answer 4

One pair

Question 5

Nerves of bundles of axons, blood vessels, and connective tissue -

Answer 5

Spinal nerves

Question 6

The spinal cord is protected by the bony vertebral column, coverings called -

Answer 6

Meninges

Question 7

The spinal cord is not only protected by meninges, but by a fluid called …..

Answer 7

Cerebrospinal fluid

Question 8

3 Parts of the Meninges:

Answer 8

Dura MAter
Arachnoid Mater
Pia Mater

Question 9

Its on top of the dura mater

-contains a cushion of FAT

Answer 9

Epidural space

Question 10

The epidural space is the site of …………… for pain control during surgeries

Answer 10

Spinal injections

Question 11

It means “tougher mother” because of its tough fibers -

Answer 11

Dura mater

Question 12

Its described as cob-webby

• composed of collagen and elastic fibers
• contain passageways

Answer 12

Arachnoid mater

Question 13

It contains significant amounts of cerebrospinal fluid -

Answer 13

Subarachnoid space

Question 14

Its called the “delicate mother” because it adheres directly to the brain and spinal cord
-contains blood vessels

Answer 14

Pia mater

Question 15

A natural fluid cushion both in and around the brain and spinal cord -

Answer 15

Cerebrospinal fluid

Question 16

They are large fluid filled spaces within the brain -

Answer 16

Ventricles

Question 17

A network of capillaries that project from the pia mater

-responsible for the formation of cerebrospinal fluid

Answer 17

Choroid plexuses

Question 18

They are fingerlike projections of the the arachnoid mater through which cerebrospinal fluid returns to the venous blood supply -

Answer 18

Arachnoid villi

Question 19

A condition in which fluid builds up in the area of the brain -

Answer 19

Hydrocephalus

Question 20

Internal hydrocephalus can be treated by surgical placement of a Shunt which drains excess …….

Answer 20

Cerebrospinal fluid

Question 21

A procedure to obtain fluid

-its done i the subarachnoid space in lumbar region between the 4th and 5th lumbar vertebrae

Answer 21

Lumbar puncture

Question 22

Two-way conducting paths:

Answer 22

Ascending tracts

Descending tracts

Question 23

Ascending tracts conduct info ……..

Answer 23

Up the cord to brain

Question 24

The descending tracts conduct info …….

Answer 24

Down the cord from brain

Question 25

There are …… pairs of spinal nerves

Answer 25

31

Question 26

The pairs of spinal nerves arent named by instead they are assigned …… and …… according to their location along vertebral column -

Answer 26

Letter

Number

Question 27

Each spinal nerve attaches to the spinal cord by means of a ……… root.

Answer 27

Ventral root

Question 28

Ventral roots carry what kinds of info?

Answer 28

Motor

Question 29

And a dorsal root carries what type of info? -

Answer 29

Sensory

Question 30

There are 4 plexuses:

Answer 30

Cervical
Brachial
Lumbosacral
Coccygeal

Question 31

Cervical plexus supplies ..

Answer 31

Head and neck

Question 32

Brachial plexus supplies ….

Answer 32

Shoulders and arms

Question 33

Lumbosacral plexus supplies …

Answer 33

Abdomen and legs

Question 34

Coccygeal plexus supplies ….

Answer 34

Floor of pelvic cavity

Question 35

An impulse conduction route to and from the CNS -

Answer 35

Reflex arc

Question 36

4 reflexes:

Answer 36

Knee jerk
Babinksi
Abdominal
Achilles

Question 37

It tests health of anterior spinal nerves -

Answer 37

Knee jerk reflexes

Question 38

Its also known as plantar flexion

• normal is extension of big toe
• abnormal is prob w/ the brain stem or damage in lumbar region of spinal cord

Answer 38

Babinski

Question 39

Its the contraction of the abdominal muscles when skin is stimulated

• test is unreliable alone
• some ppl may not have it

Answer 39

Abdominal reflex

Question 40

It tests health of S1 and S2 spinal nerves

-if abnormal, could indicate sciatic nerve pathology, disk herniation at L5=S1

Answer 40

Achilles reflex

Question 41

Each skin area supplied by a single spinal nerve is called …..

Answer 41

A dermatome