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Human Physiology, 7/e
Stuart I Fox, Pierce College

The Central Nervous System

True or False Quiz

Please answer all questions



1

The nervous system arises from the same embryonic tissue layer that produces the epidermis.(p. 188)
A)TRUE
B)FALSE
2

At 1.4 kg, the brain forms about 2.4% of the weight of a 60 kg (132 lb) adult, and correspondingly it receives about 2.4% of the total blood flow to the body. (p. 190)
A)TRUE
B)FALSE
3

About 80% of the mass of the brain arises from the telencephalon of the embryonic neural tube and forms the cerebrum. (p. 189)
A)TRUE
B)FALSE
4

The hand and facial muscles are controlled by a much larger part of the precentral gyrus than muscles of the trunk and legs. (p. 191)
A)True
B)False
5

Temporal lobe damage can impair visual perception resulting in a lack of recognition and ability to associate visual information with past experience even though the eyes function normally.(p. 192)
A)True
B)False
6

Theta waves are a normal part of the electroencephalogram (EEG) of an adult who is awake and relaxed, with the eyes closed and not concentrating on any mental task. (p. 195)
A)True
B)False
7

If you find your professor's lectures mentally stimulating, your brain will produce more beta waves, but if the lectures put you to sleep, you will produce more delta waves. (p. 194)
A)TRUE
B)FALSE
8

All visual input from the left eye is transmitted to the right occipital lobe because of the crossing-over of optic nerve fibers. (p. 195)
A)True
B)False
9

Each cerebral hemisphere receives information only from the opposite (contralateral) side of the body. (p. 195)
A)True
B)False
10

Studies of split-brain patients who have had the corpus callosum severed in an effort to treat epilepsy, have shown that the left cerebral hemisphere is dominant over the right in most people. (p. 196)
A)True
B)False
11

Language and analytical abilities reside in the left cerebral hemisphere of right-handed people and in the right hemisphere of left-handed people. (p. 197)
A)True
B)False
12

A person with damage to the left cerebral hemisphere can have a speech defect and yet be able to sing normally. (p. 197)
A)TRUE
B)FALSE
13

People with damage to Broca's area cannot comprehend or produce coherent speech. (p. 197)
A)True
B)False
14

Damage to Wernicke's area impairs both the comprehension and the production of speech.(p. 197)
A)True
B)False
15

Left-handed people have better chances of recovering from damage to Broca's area than right-handed people. (p. 198)
A)True
B)False
16

The cerebral cortex of the brain has extensive nerve connections to the limbic system and exerts strong control over its functions. (p. 198)
A)True
B)False
17

Movement of the limbs is largely under the control of the limbic system rather than the precentral gyrus. (p. 198)
A)True
B)False
18

Sexual drive and sexual behavior are controlled entirely by centers in the hypothalamus and are not affected by damage to the cerebrum. (p. 198)
A)True
B)False
19

Treatments or injuries that affect memory seem to affect short-term and long-term memory equally. (p. 200)
A)True
B)False
20

Different regions of the brain are specialized for different types of memory, and must cooperate with each other to produce a complete memory image. (p. 200)
A)True
B)False
21

With frequent usage, presynaptic neurons become capable of releasing more neurotransmitter molecules, and the postsynaptic neurons become more sensitive to them. (p. 201)
A)True
B)False
22

The two hormones of the posterior lobe of the pituitary are actually synthesized in the hypothalamus and not in the pituitary gland. (p. 203)
A)True
B)False
23

The hypothalamus controls the posterior lobe of the pituitary by means of the hypothalamo-hypophyseal nerve tract, but it does not have any control over the anterior lobe. (p. 203)
A)True
B)False
24

Several cranial nerves originate from nuclei located in the hindbrain (metencephalon). (p. 204)
A)True
B)False
25

The cerebellum receives sensory (afferent) input from muscles and tendons. (p. 204)
A)True
B)False
26

All nerve fibers that communicate between the brain and spinal cord must pass through the medulla oblongata. (p. 205)
A)True
B)False
27

The reticular activating system or RAS, responds to somatesthetic sensations arriving via the spinal cord, but not to visual or auditory sensations that bypass this center. (p. 206)
A)True
B)False
28

The spinal cord has a cortex of gray matter surrounding a central core (medulla) made up of white matter. (p. 206)
A)True
B)False
29

If a fiber tract of the spinal cord is named with the prefix spino-, such as a spinothalamic tract, it can be assumed that it transmits information from the lower body toward the brain and not in the opposite direction. (p. 206)
A)True
B)False
30

Any spinal nerve fibers that decussate (cross to the opposite side of the brain or body) always do so in the pyramids of the medulla. (p. 207)
A)True
B)False
31

Nerve fibers of the major ascending tracts of the spinal cord originate mainly in the posterior or dorsal horn of the cord. (p. 207)
A)True
B)False
32

The pyramidal tracts get this name from the fact that most of their fibers pass through the pyramids located in the medulla oblongata. (p. 207)
A)True
B)False
33

If the corticospinal tracts are severed, a person will be paralyzed from the neck down. (p. 209)
A)True
B)False
34

The rubrospinal and vestibulospinal tracts consist of nerve fibers that originate in the brain and transmit information down the spinal cord. (p. 208)
A)True
B)False
35

The cerebellum has many nerve fibers that travel down the descending spinal tracts to coordinate the activity of skeletal muscle. (p. 208)
A)True
B)False
36

Only one of the twelve pairs of cranial nerves is purely sensory. (p. 210)
A)True
B)False
37

Movements of the eyeball are controlled by the optic nerves (cranial nerve II). (p. 210)
A)True
B)False
38

Motor commands from the spinal cord cannot leave by way of the dorsal root of the spinal nerve. (p. 212)
A)True
B)False
39

Spinal reflex arcs do not have to involve association neurons. (p. 212)
A)True
B)False