ENDOPLASMIC RETICULUM (ER)
Introduction: Definition and Overview The endoplasmic reticulum (ER) is a vast, highly dynamic network of interconnected membranous tubules, sacs, and flattened sheets, collectively known as cisternae, that permeates the cytoplasm of eukaryotic cells, extending continuously from the nuclear envelope to the plasma membrane vicinity. This complex system represents a significant proportion of the total membrane […]