What is the function of the endoplasmic reticulum?

The endoplasmic reticulum (ER) is an organelle found in the cells of eukaryotic organisms. It is an interconnected network of flattened sacs or tubes encased in membranes. These membranes are continuous, joining with the outer membrane of the nuclear membrane. read more

The endoplasmic reticulum is a network of tubules and flattened sacs that produce and process lipids and proteins in plant and animal cells. The endoplasmic reticulum is a network of tubules and flattened sacs that produce and process lipids and proteins in plant and animal cells. read more

The endoplasmic reticulum occurs in most types of eukaryotic cells, but is absent from red blood cells and spermatozoa. There are two types of endoplasmic reticulum: rough (granular) and smooth (agranular). The outer face of the rough endoplasmic reticulum is studded with ribosomes that are the sites of protein synthesis. read more