Smooth Endoplasmic Reticulum Function and Structure | Cell Biology Simplified
Learn more about the structures and functions of the smooth endoplasmic reticulum in this quick introduction and overview.
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Thanks for stopping by, this is 2 minute classroom and today we are talking about the smooth endoplasmic reticulum, also known as the Smooth ER.
The Smooth ER is a network of tubular membranous structures in eukaryotic cells. It is continuous with the Rough ER but is not studded with ribosomes, hence it’s smooth name a appearance.
Although it is close in proximity and name to the Rough ER, the smooth ER has very different but equally important functions.
These functions vary by cell type, but include:
The synthesis of cholesterol and certain steroids in the adrenal glands
Involvement in carbohydrate and lipid synthesis
These lipids are also used to synthesize phospholipids for the cell membrane
The Smooth ER has a major role in detoxification and is abundant in the liver where it detoxifies the body from drugs, alcohol, and general metabolic waste. Keeping you healthy and happy.
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In skeletal muscle cells, the smooth ER has a special role. In fact, it’s so special, it gets a different name, the sarcoplasmic reticulum. It is critical in the storage and release of calcium ions involved in muscle contraction.
And although the Smooth ER isn’t involved in protein synthesis, it does play an important role in the transport of proteins.
If you have a test coming up you should check out this playlist or you can watch more videos about cells like these ones.
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