1. This Neurotranmitter ______________________ is involved in muscle action, memory and the potential behavior effects are___________________________.

2. This Neurotransmitter _____________________ is involved in mood, sleep, learning _______________and the potential behavior effects are ____________________.

3. This Neurotransmitter _______________________ is involved in heart, intestines, alertness_______________and the potential behavior effects are_________________.

4. Serotonin is involved in ______________________ and the potential behavior effects are__________________________.

5. Psychoactive drugs can be either ______________________ promoting neurotranmitter action or _______________ decreasing neurotransmitter action.