When pain impulses are transmitted from pain receptors, which of these is released by the axons?

a) dopamine
b) substance P
c) serotonin
d) acetylcholine

ANS: b

Psychology

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a. overusage b. overregularization c. overextension d. overapplication

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According to the World Health Organization (2009 ), hypertension is the leading risk factor for _____ of deaths in the world

a) 2.7% b) 5.0% c) 8.2% d) 13.0%

Psychology