3 types of biogenic amines
2 inhibitory and 2 excitatory amino acid derivatives
Inhibitory: 1. GABA (inhibitory at brain) 2. Glycine (inhibitory at spinal cord) Excitatory 1. Glutamate (learning) 2. Aspartate
Neuropeptides
2. Substance P
Purines
2. AMP
Gases
vasoDILATOR, goes directly into cell, forms from reaction of O2 and arginine`
Lipids (eicosanoids)
THC