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Compiled by: Julian Thorpe

 

The Golgi 

Normally seen as discrete units in thin section although it has been suggested that these are all inter-connected to form the Golgi Apparatus. In plant cells the units of the Golgi Apparatus are termed dictyosomes.
Each unit of the Golgi Apparatus is composed of a stack of cisternae or sacs which vary in number from 1-2 to perhaps 6-8 dependent on the secretory status of the cell. At the periphery of these cisternae 'tubular extensions' form, from which the secretory vesicles are budded off.
There is thought to be a 'forming face' associated with the RER (see reference to the 'Endomembrane Concept' in the Ultrastructure Notes) and a 'maturing face' of vesicle-producing cisternae.
MORE DETAIL on Golgi structure.