The united states ranks first among 36 nations in the

28. The United States ranks first among 36 nations in the proportion of high school
students ever using LSD or other hallucinogens in their lifetime.
a. True b. False
29. Classic hallucinogens are thought to produce their perception-altering effects by
acting on neural circuits in the brain that use the neurotransmitter _____.
30. The effects of hallucinogens typically begin within 20-90 minutes of ingestion and
can last as long as _____ hours.
31. Specific short-term effects of LSD include: 32. Tolerance for hallucinogenic drugs is short-lived and is lost if the user stops taking
the drugs for several days.
a. True b. False
33. Physical withdrawal symptoms are typically not experienced by users of
hallucinogenic drugs when chronic use is stopped.
34. Hallucinogen persisting perception disorder (HPPD) refers to:
35. Laboratory studies suggest that dissociative drugs cause their effects by disrupting
the actions of the brain chemical _____.
36. _____ causes its effects by activating a specific type of opioid receptor on nerve
cells.
a. Ketamine b. PCP c. Salvia divinorum d. DXM (Dextromethorphan)

37. The dissociation that is characteristic of dissociative drugs refers to: