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    Human Biology Study Set 5
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    Exam 13: The Nervous System
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    High Levels of Which Chemical in the Sleep Centers of the Brain
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High Levels of Which Chemical in the Sleep Centers of the Brain

Question 13

Question 13

Multiple Choice

High levels of which chemical in the sleep centers of the brain induce drowsiness and sleep?


A) norepinephrine
B) serotonin
C) adrenalin
D) encephalin
E) cyclic AMP

Correct Answer:

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