SOLVED

41. Sedatives most likely affect A) norepinephrine levels. B) the GABA system. C) dopamine receptors. D) muscarinic receptors. 42. Which of the following drugs is most likely to have life-threatening withdrawal reactions? A) alcohol B) barbiturates C) heroin D) cocaine 43. Leon ingested a drug and, at first, felt relaxed and happy. His speech was slurred, and he had great difficulty concentrating. He became irritable toward the friends he was with, trying to start a fight over nothing. Finally, Leon fell into a deep sleep. Which of the following drugs did Leon probably ingest? A) barbiturates B) marijuana C) amphetamine D) LSD 44. Cocaine is classified as a A) sedative. B) stimulant. C) barbiturate. D) hallucinogen. 45. Tim works at a law firm where he is expected to bring in a large number of cases each week. He has been working at this job for five years, typically putting in 70 hours a week. He has begun to experience irritability and has begun to drink alcohol in the evening in order to get to sleep. Based on this information, if he were taking any other drug, it would most likely be A) sedatives. B) amphetamines. C) hallucinogens. D) pain killers. Â Â