Ch 38: CNS

Question 1

The central nervous system (CNS) is enveloped by three meningeal layers:

Answer 1

the dura mater (also known as the pachymeninges), the arachnoid mater, and the
pia mater

Question 2

The ______ are also referred to as the
leptomeninges

Answer 2

pia and arachnoid layers

Question 3

Dural folds separate the two hemispheres of the
cerebrum ____and the cerebrum from the cerebellum and brainstem
______.

Answer 3

(falx cerebri)
(tentorium or falx cerebelli)

Question 4

The frontal and temporal lobes are
separated by the _____, whereas the parietal and occipital lobes are
separated by the _______

Answer 4

sylvian fissure
calcarine sulcus

Question 5

The dorsal plate houses the superior and inferior colliculi, which regulate _______, respectively

Answer 5

eye
movements and hearing impulses

Question 6

The _____ is the only
cranial nerve that exits from this dorsal location.

Answer 6

trochlear nerve

Question 7

The border between the pons and the
medulla oblongata is noteworthy for the emergence of the ______cranial nerves

Answer 7

abducens, facial, and
vestibulocochlear (acoustic)

Question 8

CSF is produced by the choroid plexus, which lies in the roofs of the ______ventricles as well as in the medial walls of the central body and inferior
horns of the ____ ventricles.

Answer 8

fourth and third
lateral

Question 9

It is the narrowest canal of the intracranial nervous system and is
therefore the most common location of obstruction of flow by compression or
tumor deposits, resulting in noncommunicating (obstructive) hydrocephalus

Answer 9

aqueduct of Sylvius

Question 10

The medulla oblongata houses the ff cranial nerve nuclei

Answer 10

VI, VII, VIII, IX, X, XI, XII