Phosphoplipids belong to a large family of molecules containing both lipid and phosphate components (such as glycerophosphatides, sphingolipids, etc.). In particular, glycerophosphatides consist of a glycerol bound to two fatty acids and a phosphate molecule that is linked to one of many compounds including choline, serine, ethanol- amine, and inositol. Phosphatidyl choline, also known as lecithin, is a primary example of a phospholipid. The functions of phospholipids include serving as a major constituent of cell membranes, participating in biochemical reactions, and as an important structural and functional component of tissues of the central and peripheral nervous systems.