Table 1

*Major Functions of C. elegans* Neurotransmitters**
	Inhibition			Promotion
Octopamine	Egg laying	Pharyngeal pumping
Tyramine	Egg laying	Pharyngeal pumping	Spontaneous reversal
Dopamine	Food-dependent forward movement			Slows movements in the presence of food	High-angle turning	Learning behaviors
Serotonin	Locomotion	Defecation		Pharyngeal pumping	Egg laying
GABA	Muscle contraction			Muscle relaxation	Defecation
Acetylcholine				Muscle contractions

Table 1: Summary of major functions associated with neurotransmitters in C. elegans.