Please answer all questions. The numbers at the end of each question refer to the textbook page where the question topic is discussed.
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1 | |
The spinal cord ends caudally at the coccyx. (384) |
| | A) | True |
| | B) | False |
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2 | |
The anterior median fissure and the posterior median sulcus extend the length of the spinal cord. (384) |
| | A) | True |
| | B) | False |
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3 | |
Descending tracts of the spinal cord may originate from the cerebrum, cerebellum, mesencephalon (midbrain), or brain stem. (388) |
| | A) | True |
| | B) | False |
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4 | |
For a cerebral angiogram, a radiopaque substance is injected into the meninges to reveal aneurysms and vascular constrictions or displacements by tumors. (391) |
| | A) | True |
| | B) | False |
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5 | |
An electroencephalogram (EEG) may detect brain trauma in epileptic patients, but not seizures. (391) |
| | A) | TRUE |
| | B) | FALSE |
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6 | |
A nerve block is the same as a local anesthetic. (392) |
| | A) | True |
| | B) | False |
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7 | |
Meningitis is the most common disease of the nervous system and is the third most frequent cause of death in the United States. (395) |
| | A) | True |
| | B) | False |
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8 | |
Neurology is the study of the diseases of the nervous system. (344) |
| | A) | True |
| | B) | False |
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9 | |
The nervous system functions with the circulatory system in coordinating the activities of the other body systems. (344) |
| | A) | True |
| | B) | False |
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10 | |
The functions of the autonomic nervous system are independent of those of the central and peripheral nervous systems in regulating the visceral organs. (345) |
| | A) | True |
| | B) | False |
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11 | |
The central nervous system derives from ectoderm, whereas the peripheral nervous system derives from mesoderm. (346) |
| | A) | True |
| | B) | False |
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12 | |
All of the neurons and most of the neuroglia of the body derive from the embryonic neural plate. (347) |
| | A) | True |
| | B) | False |
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13 | |
A person is born with all the neurons he or she is capable of producing. (348) |
| | A) | True |
| | B) | False |
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14 | |
The cell body is the enlarged portion of the neuron that contains the nucleus and nucleolus surrounded by cytoplasm. (348) |
| | A) | True |
| | B) | False |
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15 | |
It is thought that axonal transport within a neuron is responsible for the movement of the herpes virus, rabies virus, and tetanus toxin. (348) |
| | A) | True |
| | B) | False |
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16 | |
The neurolemmocytes form a regeneration tube, which helps guide the growing axon tip to its proper destination. (351) |
| | A) | True |
| | B) | False |
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17 | |
Neurons within the brain contain perivascular feet that are structurally involved in the blood-brain barrier. (351) |
| | A) | True |
| | B) | False |
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18 | |
The autonomic nervous system is characterized by the presence of sensory and motor bipolar neurons. (352) |
| | A) | True |
| | B) | False |
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19 | |
Somatic motor nerve fibers convey impulses from the CNS to the skeletal muscles, causing them to contract. (352) |
| | A) | True |
| | B) | False |
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20 | |
Synaptic transmission is made possible by the secretion of cholinesterase from the synaptic vesicles of a presynaptic neuron. (358) |
| | A) | True |
| | B) | False |
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21 | |
As an impulse extends along an axon, there is a slight loss in amplitude due to current spread. (357) |
| | A) | True |
| | B) | False |
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22 | |
The speed of impulse conduction is faster in myelinated neurons with relatively large diameters than in unmyelinated nerve fibers with small diameters. (357) |
| | A) | True |
| | B) | False |
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23 | |
Aspirin and caffeine affect the nervous system by altering the rates, or speed, of nerve conduction. (358) |
| | A) | True |
| | B) | False |
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24 | |
The entire CNS is protected by a bony encasement. (358) |
| | A) | True |
| | B) | False |
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25 | |
The brain is the only part of the CNS that is covered with meninges and bathed in cerebrospinal fluid. (358) |
| | A) | True |
| | B) | False |
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26 | |
Gray matter exists only as the outer covering of the brain where it is convoluted. (359) |
| | A) | True |
| | B) | False |
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27 | |
White matter within the brain consists of aggregations of dendrites and myelinated axons and associated neuroglia. (359) |
| | A) | True |
| | B) | False |
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28 | |
The brain of an adult receives approximately 20% of the total resting cardiac output. (359) |
| | A) | True |
| | B) | False |
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29 | |
The volume of blood flow to the brain varies considerably depending on the extent of mental or physical activity. (359) |
| | A) | True |
| | B) | False |
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30 | |
Cerebral gyri and cerebral sulci form the convolutions of the white matter within the cerebral cortex. (363) |
| | A) | True |
| | B) | False |
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2002 McGraw-Hill Higher Education