"Mastering & understand Golgi Apparatus: Function, Structure & Products in Minutes - Graphic Tablet Drawing Inside!" The Golgi apparatus , also known as the Golgi complex or Golgi body - the post office of cell, is an essential organelle found in most eukaryotic cells.If you have ever wondered how proteins get modified and transported inside our cell, this organelle does it all. yes, It plays a vital role in modifying, sorting, and packaging proteins and lipids for delivery to targeted destinations inside or outside the cell. Structure of the Golgi Apparatus The Golgi apparatus is made up of a series of curved, flattened membrane sacs stacked on top of each other, these are called cisternae . The main structural component of golgi apparatus. It has three main regions: Cis face : The receiving side(Entry face) closest to the endoplasmic reticulum (ER) and receives vesicles from the Endoplasmic Reticulum. Medial region : The central layers where most modif...