Golgi Apparatus

Golgi Apparatus:  

Is closely related to the endoplasmic reticulum. It has membranes similar to those of the  a granular endoplasmic  reticulum.  It usually is composed

of  four or more stacked layers of thin, flat, enclosed vesicles lying near  one side of the nucleus. This a

pparatus is prominent in secretory cells, where it is located on the side of  the cell from which the secretory substances are extruded. The Golgi apparatus functions in association with the endoplasmic reticulum,  small “transport vesicles” continually pinch off from the endoplasmic reticulum and shortly thereafter fuse with the Golgi apparatus. In this way, substances entrapped in the ER vesicles are transported from the  endoplasmic reticulum to the Golgi apparatus. The transported substances are then processed in the Golgi apparatus to form lysosomes,  secretory vesicles  and  other cytoplasmic components.