Which of the following drugs stimulates the brain by blocking chemicals that normally inhibit or slow nerve activity and results in increased alertness, sweating, tinnitus, talkativeness, and hand tremors?
A)GHB
B)mescaline
C)caffeine
D)codeine

Question

Quizplus · Accepted Answer

Caffeine stimulates the central nervous system by blocking adenosine, a neurotransmitter that normally promotes sleep and suppresses arousal, leading to increased alertness and other effects such as sweating, tinnitus, talkativeness, and hand tremors.

Which of the Following Drugs Stimulates the Brain by Blocking