Which of the following combinations indicates the correct distribution of spinal nerve pairs?
A. 7 cervical - 12 thoracic - 6 lumbar - 5 sacral - 1 coccygeal
B. 8 cervical - 12 thoracic - 5 lumbar - 5 sacral - 1 coccygeal
C. 7 cervical - 13 thoracic - 6 lumbar - 5 sacral - 1 coccygeal
D. 7 cervical - 12 thoracic - 5 lumbar - 6 sacral - 1 coccygeal
E. 8 cervical - 12 thoracic - 6 lumbar - 4 sacral - 1 coccygeal
Answer: B
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Which condition is characterized by a lack of memory for events occurring after the trauma or disease that caused the condition?
a) narcolepsy b) retrograde amnesia c) sleep apnea d) coma e) anterograde amnesia
The all-or-none principle states that
A) all stimuli will produce identical action potentials. B) all stimuli great enough to bring the membrane to threshold will produce identical action potentials. C) the greater the magnitude of the stimuli, the greater the magnitude of the action potential. D) only sensory stimuli can activate action potentials. E) only motor stimuli can activate action potentials.
Alpha EEG rhythm is descriptive of or occurs during
A. slow-wave sleep. B. paradoxical sleep. C. both slow-wave sleep and paradoxical sleep. D. neither slow-wave sleep nor paradoxical sleep.
The diagram illustrates sensory nerve endings in the skin. What structure does "E" represent?
A. Meissner corpuscles B. free nerve endings C. Ruffini end organ D. Pacinian corpuscle E. Merkel disks