The Endoplasmic Reticulum

The Endoplasmic Reticulum

Author: Aaron Mullally

This lesson will describe the structure and function of a cell's endoplasmic reticulum.

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Terms to Know
Endomembrane System

A system of cellular structures including the endoplasmic reticulum, nuclear envelope, golgi body, and vesicles that is used to synthesize and package proteins and lipids

Endoplasmic Reticulum

A cell organelle that assembles and packages proteins and lipids


A cell organelle responsible for synthesizing proteins

Rough Endoplasmic Reticulum

A part of the endoplasmic reticulum with proteins embedded in it - mainly responsible for assembling and packaging proteins

Smooth Endoplasmic Reticulum

A part of the endoplasmic reticulum responsible for mostly packaging lipids