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True or False Quiz
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1
The nervous system arises from the same embryonic tissue layer that produces the epidermis.
A)True
B)False
2
At 1.4 kg, the brain forms about 2.4% of the weight of a 60 kg adult, and correspondingly it receives about 2.4% of the total blood flow to the body.
A)True
B)False
3
About 20% of the mass of the brain arises from the telencephalon of the embryonic neural tube and forms the cerebrum.
A)True
B)False
4
The upper face and lip muscles are controlled by a much larger part of the precentral gyrus than muscles of the trunk and legs.
A)True
B)False
5
Damage to the temporal lobe 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.
A)True
B)False
6
Theta waves are a normal part of the electroencephalogram of an adult who is awake and relaxed, with the eyes closed and not concentrating on any mental task.
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.
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.
A)True
B)False
9
Each cerebral hemisphere receives information only from the contralateral side of the body.
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 in most people the right cerebral hemisphere is dominant.
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.
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.
A)True
B)False
13
People with damage to Wernicke's area cannot comprehend or produce coherent speech.
A)True
B)False
14
Right-handed people have better chances of recovering from damage to Broca's area than left-handed people.
A)True
B)False
15
The cerebral cortex of the brain has extensive nerve connections to the limbic system and exerts strong control over its functions.
A)True
B)False
16
Movement of the limbs is largely under the control of the limbic system.
A)True
B)False
17
Sexual drive and sexual behavior are controlled entirely by centers in the hypothalamus and are not affected by damage to the cerebrum.
A)True
B)False
18
Treatments or injuries that affect memory seem to affect short-term and long-term memory equally.
A)True
B)False
19
It is thought that the neural stem cells in the hippocampus may undergo mitosis during the formation of memories and during learning.
A)True
B)False
20
With frequent usage, presynaptic neurons become capable of releasing more neurotransmitter molecules, and the postsynaptic neurons become more sensitive to them.
A)True
B)False
21
The two hormones of the posterior lobe of the pituitary are actually synthesized in the hypothalamus and not in the pituitary gland.
A)True
B)False
22
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.
A)True
B)False
23
Several cranial nerves originate from nuclei located in the hindbrain.
A)True
B)False
24
The pons receives sensory input from muscles and tendons.
A)True
B)False
25
All nerve fibers that communicate between the brain and spinal cord must pass through the medulla oblongata.
A)True
B)False
26
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.
A)True
B)False
27
The spinal cord has a cortex of gray matter surrounding a central core (medulla) made up of white matter.
A)True
B)False
28
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.
A)True
B)False
29
Any spinal nerve fibers that decussate always do so in the pyramids of the medulla.
A)True
B)False
30
Nerve fibers of the major ascending tracts of the spinal cord originate mainly in the posterior or dorsal horn of the cord.
A)True
B)False
31
The pyramidal tracts get this name from the fact that most of their fibers pass through and decussate at the pyramids located in the medulla oblongata.
A)True
B)False
32
If the corticospinal tracts are severed at the level of the lumbar vertebrae, a person will be paralyzed from the neck down.
A)True
B)False
33
The rubrospinal and vestibulospinal tracts consist of nerve fibers that originate in the brain and transmit information down the spinal cord.
A)True
B)False
34
The cerebellum has many nerve fibers that travel down the descending spinal tracts to coordinate the activity of skeletal muscle.
A)True
B)False
35
Only one of the twelve pairs of cranial nerves is purely sensory.
A)True
B)False
36
Movements of the eyeball are controlled by the optic nerves.
A)True
B)False
37
Motor commands from the spinal cord leave by way of the dorsal root of the spinal nerve.
A)True
B)False
38
Association neurons are not always found in spinal reflex arcs.
A)True
B)False





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