endoplasmic reticulummedical dictionary

<cell biology> Membrane system that ramifies through the cytoplasm. The membranes of the endoplasmic reticulum are separated by 50-200 nm and the cisternal space thus enclosed constitutes a separate compartment.

The Golgi region is composed of flattened sacs of membrane that together with endoplasmic reticulum and lysosomes constitute the GERL system.

See: smooth endoplasmic reticulum, rough endoplasmic reticulum.

(11 Mar 2008)