Is endoplasmic reticulum always attached to plasma membrane?

Hi! Endoplasmic reticulum is a fascinating structure.Depending how much of biology and in particular cell biology you know you can learn about ER in much detail. read more

Yes, the endoplasmic reticulum is always attached to the nuclear membrane. ER is a part of the cytoplasmic vesicular system which also consists of nuclear envelope, lysosomes, endosomes and Golgi complex. ER is a continuous system, connected on one side to nuclear envelope and on the other side to the cell membrane. read more

Endoplasmic reticulum (ER), in biology, a continuous membrane system that forms a series of flattened sacs within the cytoplasm of eukaryotic cells and serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins. read more