Endoplasmic reticulum (ER)
Extends throughout the cell and consists of the rough ER (RER) and smooth ER. Rough ER has ribosomes attached to them and it produces, stores, and tranports protiens. Smooth ER has no ribosomes (which is why they're smooth) and is involved in metabolic processes including the synthesis, tansport, and storge of lipids. Also detoxes drugs and alcohol.