1*Synaptic Cleft**Cytosol*Acetyl CoACholinePhosphatidylethanolamineACHECytidine diphosphate cholinePDHA2CholineGlycerophosphocholinePhosphorylcholinePhosphatidylcholinePyruvate from GlycolysisPCYT1AAcetateCHATPDHA1CHKAPEMTAcetylcholine