sentences:  Phosphatidylethanolamine produced in the mitochondrial membrane is also transported throughout the cell to other membranes for use.In a process that mirrors phosphatidylcholine synthesis, phosphatidylethanolamine is also made via the cytidine diphosphate-ethanolamine pathway, using ethanolamine as the substrate.Through several steps taking place in both the cytosol and endoplasmic reticulum, the synthesis pathway yields the end product of phosphatidylethanolamine.