9781422282557

WORDS TO UNDERSTAND

euphoria: feelings of extreme happiness. neurotransmitter: a chemical that carries messages between nerve cells and between nerve cells and muscles. panic attacks: sudden, overwhelming feelings of fear or anxiety that prevent a person from functioning. paranoia: unreasonable suspicion of other people. synthesize: to produce a new substance through various chemical processes. tolerance: the state of needing more of a particular drug in order to achieve the same effect.