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1 | | The nervous system arises from the same embryonic tissue layer that produces the epidermis. |
| | A) | True |
| | B) | False |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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9 | | Each cerebral hemisphere receives information only from the contralateral side of the body. |
| | A) | True |
| | B) | False |
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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 |
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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 |
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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 |
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13 | | People with damage to Wernicke's area cannot comprehend or produce coherent speech. |
| | A) | True |
| | B) | False |
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14 | | Right-handed people have better chances of recovering from damage to Broca's area than left-handed people. |
| | A) | True |
| | B) | False |
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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 |
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16 | | Movement of the limbs is largely under the control of the limbic system. |
| | A) | True |
| | B) | False |
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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 |
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18 | | Treatments or injuries that affect memory seem to affect short-term and long-term memory equally. |
| | A) | True |
| | B) | False |
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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 |
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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 |
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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 |
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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 |
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23 | | Several cranial nerves originate from nuclei located in the hindbrain. |
| | A) | True |
| | B) | False |
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24 | | The pons receives sensory input from muscles and tendons. |
| | A) | True |
| | B) | False |
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25 | | All nerve fibers that communicate between the brain and spinal cord must pass through the medulla oblongata. |
| | A) | True |
| | B) | False |
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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 |
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27 | | The spinal cord has a cortex of gray matter surrounding a central core (medulla) made up of white matter. |
| | A) | True |
| | B) | False |
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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 |
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29 | | Any spinal nerve fibers that decussate always do so in the pyramids of the medulla. |
| | A) | True |
| | B) | False |
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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 |
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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 |
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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 |
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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 |
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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 |
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35 | | Only one of the twelve pairs of cranial nerves is purely sensory. |
| | A) | True |
| | B) | False |
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36 | | Movements of the eyeball are controlled by the optic nerves. |
| | A) | True |
| | B) | False |
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37 | | Motor commands from the spinal cord leave by way of the dorsal root of the spinal nerve. |
| | A) | True |
| | B) | False |
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38 | | Association neurons are not always found in spinal reflex arcs. |
| | A) | True |
| | B) | False |
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