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Heroin causes labored defecation and long-term constipation because __________.
Q46: Phencyclidine (PCP)was once used medically as a
Q55: Drug abuse field professionals have concluded that
Q90: Midbrain is to sensory and motor reflexes
Q105: Polydrug users initiate low-prevalence drugs (such as
Q120: It is possible for drug concentrations to
Q135: One ingredient in "homegrown" methamphetamine is pseudoepinephrine,found
Q159: LSD was once believed to be a
Q163: Chronic use of cocaine results in _.<br>A)increased
Q197: Chipping refers to _.<br>A)the adulteration of heroin
Q224: Choose one of the seven principal neurotransmitters