MICROANATOMY

Detailed explanation-1: -Cisternae are long flattened sacs. The vesicles are oval membrane-bound vacuolar structures. Tubules are branched structure which along with cisternae and vesicles form a network.

Detailed explanation-2: -The endoplasmic reticulum (ER) is a continuous membrane system but consists of various domains that perform different functions. Structurally distinct domains of this organelle include the nuclear envelope (NE), the rough and smooth ER, and the regions that contact other organelles.

Detailed explanation-3: -The endoplasmic reticulum is found in most eukaryotic cells and forms an interconnected network of flattened, membrane-enclosed sacs known as cisternae (in the RER), and tubular structures in the SER. The membranes of the ER are continuous with the outer nuclear membrane.