Which sleep stage accounts for 40-50% of total sleep time?
a. Stage N3 c. REM
b. Stage N2 d. Stage N1
b. Stage N2
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The toxicological term used to express the level of exposure safe for someone with full-time occupational exposure is abbreviated as:
a. Ld. c. TLV/TWA. b. TLV/CL. d. IDLH.
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Specialized cells of the nervous system are:
A) striated B) neurons C) tendons D) islet cells
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Which of the following is/are the primary muscle(s) of ventilation?
Diaphragm External intercostals Scalene Pectoralis major A) I B) I and II C) I, II, and III D) I, II, III, and IV
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Which of the following is the surgical term for the removal of a growth with a snare or forceps?
A) polypectomy B) pulpectomy C) incision D) removal
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