Chapter 1.7 (page 13)

Question 1

TRUE or FALSE:

Cerebrospinal Fluid (CSF) originates from the brain blood plasma.

Answer 1

TRUE.

Question 2

TRUE or FALSE:

The arachnoid villi is found in the ventricles of the brain.

Answer 2

FALSE.

(They are found in the subarachnoid space.)

Question 3

Cerebrospinal Fluid forms continuously; the
approximate total volume is _____ and is replaced every _____.

Answer 3

150 mL

3-4 hours

Question 4

What are the three meninges that cover the CNS and its blood vessels?

Answer 4

Dura Mater

Arachnoid Mater

Pia Mater

Question 5

__________ is the most superficial layer of meninges; it is the toughest covering of the brain.

Answer 5

Dura Mater

Question 6

The space between the Dura Mater and the Arachnoid Mater is called ________, and the space between the Arachnoid Mater and the Pia Mater is called _________.

Answer 6

Subdural Space

Subarachnoid Space

Question 7

This is found in and around brain and the spinal cord, and it acts as a cushion and gives buoyancy to the CNS.

Answer 7

Cerebrospinal Fluid (CSF)

Question 8

TRUE or FALSE:

The brain is the center of all spinal reflexes and
the switchboard for the ascending and descending messages to and from the brain.

Answer 8

FALSE.

It is the spinal cord.

Question 9

The spinal cord passes _________ to the brain and ___________ from the brain to the effector organs.

Answer 9

Sensory Information

Motor Messages/Actions

Question 10

The spinal cord, enclosed within the vertebral column, extends
from the _________ down to ____.

Answer 10

Occiput/Occipital Bone of the Skull

L1-L2 (Lumbar Spine)

Question 11

Columns of white matter that form the outer portion of the spinal cord are called _________.

Answer 11

Spinal Tracts

Question 12

If the nerve fibres are myelinated they are called _______. If the tissue is composed of dendrites, cell bodies and
unmyelinated axons, they make up ________.

Answer 12

White Matter

Gray Matter