Chapter 12 - The Central Nervous System

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1

What are the brain regions of adults?

cerebrum, diencephalon, brain stem and cerebellum

2

What brain region is comprised of the midbrain, pons, and medulla?

brain stem

3

What brain region includes the thalmus, hypothalmus, and pituitary gland?

diencephalon

4

What is the central cavity of the CNS surrounded by gray matter, with external white matter composed of myelinated fiber tracts?

spinal cord

5

What region of the CNS includes cerebral hemispheres and the cerebellum?

brain

6

The ventricles of the brain are filled with cerebrospinal fluid and are lined by what?

ependymal cells

7

The lateral ventricles of the brain go into the third ventricle via what?

interventricular foramen

8

The third ventricle of the brain goes into the fourth ventricle via what?

cerebral aqueduct

9

The paired, C-shaped ventricles in the cerebral hemispheres are separated anteriorly by what?

septum pellucidum

10

The third ventricle is located where?

in the diencephalon

11

The fourth ventricle is located where?

in the hindbrain

12

The fourth ventricle has three openings. Which are in the side walls?

lateral apertures

13

The fourth ventricle has three openings. Which are in the roof?

median aperture

14

Which surface markings on the cerebral hemispheres are the ridges?

gyri or gyrus

15

Which surface markings on the cerebral hemispheres are shallow grooves?

sulci

16

Which surface markings on the cerebral hemispheres are deep grooves?

fissures

17

What separates the two hemispheres of the brain?

longitudinal fissure

18

What separates the cerebrum and cerebellum?

transverse cerebral fissure

19

What separates the precentral gyrus of the frontal lobe and the postcentral gyrus of the parietal lobe?

central sulcus

20

What separates the occipital and parietal lobes?

parieto-occipital sulcus

21

What outlines the temporal lobes?

lateral sulcus

22

What are the basic regions of the cerebral hemispheres?

cerebral cortex, white matter, basal nuclei

23

What area of the brain deals with sensory?

posterior

24

What area of the brain deals with motor activity?

anterior

25

What is the thin, superficial layer of gray matter that makes up 40% of the brain and is the site of the conscious mind?

cerebral cortex

26

Where is the primary motor cortex located?

precentral gyrus

27

Where is the premotor cortex located?

anterior to the precentral gyrus

28

What is Broca's area responsible for?

motor speech, speech production

29

What is Broca's area located?

anterior to the inferior premotor area

30

What is Wernicke's area associated with?

understanding language