We have our connection, the backbone, the glycerol group, and we have the phosphate group that bears a negative charge on the oxygen, which is delocalized among these two oxygens. So there is an electric dipole moment in the phosphate group and that's exactly why it's a polar molecule. So sometimes attached to our phosphate, we also have an additional polar group known as the choline. The choline basically adds polarity to our phospholipid bilayer. So we have the non polar fatty acid, the glycerol, that connects the fatty acids to our phosphate, the polar group, and then we have our choline. Now, instead of actually drawing out this entire molecule, we usually use a shortcut method of drawing our phospholipids, and that's this depiction here.