MICROANATOMY

Detailed explanation-1: -The endoplasmic reticulum (ER) is a large, dynamic structure that serves many roles in the cell including calcium storage, protein synthesis and lipid metabolism. The diverse functions of the ER are performed by distinct domains; consisting of tubules, sheets and the nuclear envelope.

Detailed explanation-2: -The endoplasmic reticulum is a network of tubules and flattened sacs that serve a variety of functions in plant and animals. There are two regions of the ER that differ in both structure and function. One region is called rough ER because it has ribosome attached to the cytoplasmic side of the membrane.