Match the following drugs with their descriptions.
increase the activity of the central nervous system
hallucinogens
2. reduce the activity of the central nervous system
stimulants
3.
stop the transmission of pain impulses to the brain and spinal
cord by preventing the perception of pain
depressants
fight invading bacteria by either slowing their multiplication
or by destroying them
antibiotics
5.
reduce the physical and psychological symptoms of anxiety
by reducing brain activity
tranquilizers
6.
naturally occurring or synthetically produced drugs that can
cause hallucinations
non-narcotic analgesics