Central Nervous System

Question 1

The brain and spinal cord are enclosed in three membranous wrappings, the ____. From the outermost to innermost it includes:
1) the ____ mater
2) the ____ mater
3) the ____ mater

Answer 1

1) dura
2) arachnoid
3) pia

Question 2

Which layer of the meninges is an outer, tough membrane composed of collagen fibers?

Answer 2

dura mater

Question 3

In the cranial cavity, the dura mater’s outer layer is the ____ dura. The dura mater’s inner layer is the ____ dura.

Answer 3

periosteal; meningeal

Question 4

Which layer of the meninges is located in the middle and can be easily seen when the dura is stripped away?

Answer 4

arachnoid mater

Question 5

The archanoid meninx has califlour-like projections called ____ ____ that extend into the sinus.

Answer 5

archnoid granulations

Question 6

Which layer of the meninges is the innermost layer and is usually only visible with a microscope? It usually follows every minute contour of the brain and cord surface. It is also transparent and is composed of collagenous and elastic fibers and a few fibroblasts.

Answer 6

pia mater

Question 7

The arachnoid and pia mater are so thin compared to the dura that they are often collectively called the ____.

Answer 7

leptomeninges

Question 8

What is the spinal part of the dura mater called?

Answer 8

dural sac

consists only of meningeal dura

Question 9

The dural sac is not presses against bone, but is seperated from the bone by a fat-filled ___ ___.

Answer 9

epidural space

Question 10

Where is anesthesia applied for such purposes as abominal surgery and cesarean childbirth?

Answer 10

in the epidural space

Question 11

The brain has four cavaties deep inside called the ____, filled with cerebrospinal fluid (CSF).

Answer 11

ventricles

Question 12

Each ventricle has a spongey mass of tissue on its wall called what?

Answer 12

the choroid plexus

Question 13

What is located at #1 in the picture below?

Answer 13

posterior root ganglion

Question 14

Which part of the spinal cord included motor neurons that control skeletal movement?

Answer 14

anterior horn (ventral horn)

Question 15

For neauron anatomy, what is the most common stain you will see in medical school?

Answer 15

myelin stain

Question 16

In a myelin-stained section, what color will white matter be and what color will gray matter be?

Answer 16

• white matter - gray/darker color
• gray matter - light gray/lighter color

Question 17

What vertebral column is represented by “L”?

Answer 17

lumbar

Question 18

What vertebral column is represented by “T”?

Answer 18

throacic

Question 19

What vertebral column is represented by “C”?

Answer 19

cervical

Question 20

What vertebral column is represented by “S”?

Answer 20

sacral (lumbosacral)

Question 21

What is the central canal of the spinal cord filled with?

Answer 21

cerebral spinal fluid

Question 22

Which part of the spinal root system is responsible for sensory?

Answer 22

posterior root system (dorsal)

Question 23

Which part of the spinal root system is responsible for motor functions?

Answer 23

anterior root system (ventral)

Question 24

What is the sensory function where you are aware of where you are in space?

Answer 24

proprioception

Question 25

Information coming from the primary motor cortex travel down to the ____ pyramid where the information signal crosses over and travels down the ____ tract.

Answer 25

medulla; corticospinal

Question 26

The ventral horn of the spinal cord contains neurons connected to what function?
A) visceral sensory
B) Proprioception
C) Somatosensory
D) Motor

Answer 26

D) motor