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| 1 | |
When impulses from various sources have an additive effect on a neuron, the process is called |
| | A) | facilitation |
| | B) | divergence |
| | C) | convergence |
| | D) | autonomic switching |
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| 2 | |
Which component of a reflex arc is located entirely within the central nervous system? |
| | A) | effector |
| | B) | interneuron |
| | C) | sensory neuron |
| | D) | receptor |
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| 3 | |
The organs of the central nervous system are the |
| | A) | brain and cranial nerves |
| | B) | brain and meninges |
| | C) | brain and spinal nerves |
| | D) | brain and spinal cord |
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| 4 | |
The outer membrane covering the brain is composed of fibrous connective tissues and is called the |
| | A) | dura mater |
| | B) | arachnoid mater |
| | C) | periosteum |
| | D) | pia mater |
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| 5 | |
Cerebrospinal fluid is mainly found between the |
| | A) | arachnoid mater and the dura mater |
| | B) | dura mater and the bones of the skull |
| | C) | pia mater and arachnoid mater |
| | D) | pia mater and the surface of the brain and spinal cord |
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| 6 | |
In the adult, the spinal cord ends |
| | A) | at the sacrum |
| | B) | between thoracic vertebrae 11 and 12 |
| | C) | between lumbar vertebrae 1 and 2 |
| | D) | at lumbar vertebra 5 |
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| 7 | |
If a person has no sensation in the legs, which of the following may be injured or damaged? |
| | A) | ascending tracts |
| | B) | anterior horn in the lumbar enlargement |
| | C) | posterior horn in the cervical enlargement |
| | D) | descending tracts |
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| 8 | |
What structure connects the left and right cerebral hemispheres? |
| | A) | corpus callosum |
| | B) | falx cerebri |
| | C) | longitudinal fissure |
| | D) | tentorium cerebeli |
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| 9 | |
Which of the following is involved in hearing a phone ring? |
| | A) | occipital lobe |
| | B) | parietal lobe |
| | C) | frontal lobe |
| | D) | temporal lobe |
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| 10 | |
Which of the following is a function of the association areas in the frontal lobe? |
| | A) | recognizing your mother |
| | B) | planning a party |
| | C) | reading your textbook |
| | D) | understanding your friend's speech |
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| 11 | |
The pathologic movements of Parkinson and Huntington disease are due to damage in the |
| | A) | extrapyramidal tracts |
| | B) | primary motor area |
| | C) | basal nuclei |
| | D) | cerebellum |
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| 12 | |
Cerebrospinal fluid is produced by the |
| | A) | fourth ventricle |
| | B) | cerebral aqueduct |
| | C) | pia mater |
| | D) | choroid plexuses |
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| 13 | |
The diencephalon contains all of the following structures except |
| | A) | pons |
| | B) | thalamus |
| | C) | optic chiasma |
| | D) | pineal gland |
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| 14 | |
The part of the brain stem that contains centers for cardiovascular control and sneezing is the |
| | A) | cerebellum |
| | B) | midbrain |
| | C) | medulla oblongata |
| | D) | pons |
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| 15 | |
The part of the brain responsible for regulation of sleep and wakefulness is the |
| | A) | reticular formation |
| | B) | diencephalon |
| | C) | thalamus |
| | D) | limbic system |
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| 16 | |
The lobes of the cerebellum are connected by the |
| | A) | vermis |
| | B) | falx cerebelli |
| | C) | cerebellar cortex |
| | D) | cerebellar peduncles |
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| 17 | |
The cranial nerves that control movement of the eyes are |
| | A) | optic, oculomotor, and facial |
| | B) | oculomotor, trochlear, and abducens |
| | C) | optic, oculomotor, and abducens |
| | D) | oculomotor, trigeminal, and abducens |
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| 18 | |
The cranial nerve responsible for equilibrium and hearing is the |
| | A) | vestibulocochlear |
| | B) | abducens |
| | C) | facial |
| | D) | trigeminal |
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| 19 | |
The only cranial nerve that innervates structures below the neck is the |
| | A) | hypoglossal |
| | B) | glossopharyngeal |
| | C) | olfactory |
| | D) | vagus |
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| 20 | |
The part of the nervous system that is most active when the body is at rest is the |
| | A) | reticular formation |
| | B) | parasympathetic division |
| | C) | somatic division |
| | D) | sympathetic division |
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| 21 | |
Release of neurotransmitter from the presynaptic neuron is dependent upon diffusion of calcium ions into the cell. |
| | A) | True |
| | B) | False |
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| 22 | |
The sensory function of the nervous system is carried out by efferent fibers. |
| | A) | True |
| | B) | False |
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| 23 | |
The dendrite arises from a hillock or elevation of the cell body and carries impulses away from the cell body. |
| | A) | True |
| | B) | False |
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| 24 | |
Myelinated fibers form the white matter in the central nervous system. |
| | A) | True |
| | B) | False |
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| 25 | |
A neuron may have many dendrites but only one axon. |
| | A) | True |
| | B) | False |
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| 26 | |
Neurons that are deprived of oxygen can be irreversibly damaged. |
| | A) | True |
| | B) | False |
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| 27 | |
Neurons are the most abundant cells in the nervous system. |
| | A) | True |
| | B) | False |
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| 28 | |
Myelination begins in prenatal development and is complete by the time of birth. |
| | A) | True |
| | B) | False |
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| 29 | |
Sodium ions pass more easily through the cell membrane than potassium ions. |
| | A) | True |
| | B) | False |
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| 30 | |
The amount of change in the resting potential of a cell membrane is proportional to the intensity of the stimulus. |
| | A) | True |
| | B) | False |
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| 31 | |
The speed of nerve impulse conduction increases as the diameter of the nerve fiber increases. |
| | A) | True |
| | B) | False |
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| 32 | |
The short time after a nerve potential when an axon is non-responsive to a threshold stimulus is called the all or none principle. |
| | A) | True |
| | B) | False |
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