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SECTION II. CENTRAL & PERIPHERAL NEUROPHYSIOLOGY

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A 28-year-old man was seen by a neurologist because he had experienced prolonged episodes of tingling and numbness in his right arm. He underwent a neurologic exam to evaluate his sensory nervous system. Which of the following receptors is correctly paired with the type of stimulus to which it is most apt to respond?

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A. Pacinian corpuscle and motion.

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B. Meissner corpuscle and deep pressure.

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C. Merkel cells and warmth.

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D. Ruffini corpuscles and sustained pressure.

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E. Muscle spindle and tension.

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Nociceptors

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A. are activated by strong pressure, severe cold, severe heat, and chemicals.

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B. are absent in visceral organs.

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C. are specialized structures located in the skin and joints.

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D. are innervated by group II afferents.

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E. are involved in acute but not chronic pain.

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A generator potential

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A. always leads to an action potential.

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B. increases in amplitude as a more intense stimulus is applied.

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C. is an all-or-none phenomenon.

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D. is unchanged when a given stimulus is applied repeatedly over time.

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E. All of the above.

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Sensory systems code for the following attributes of a stimulus:

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A. modality, location, intensity, and duration.

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B. threshold, receptive field, adaptation, and discrimination.

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C. touch, taste, hearing, and smell.

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D. threshold, laterality, sensation, and duration.

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E. sensitization, discrimination, energy, and projection.

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Which of the following are correctly paired?

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A. Neuropathic pain and withdrawal reflex

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B. First pain and dull, intense, diffuse, and unpleasant feeling

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C. Physiologic pain and allodynia

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D. Second pain and C fibers

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E. Nociceptive pain and nerve damage

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A 32-year-old woman experienced the sudden onset of a severe cramping pain in the abdominal region. She also became nauseated. Visceral ...

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