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Created with Fabric.js 1.4.5 The Smooth Endoplasmic Reticulum (ER) The Smooth Endoplasmic Reticulum (ER) The smooth endoplasmic reticulum performs many important functions in a cell including: The smooth endoplasmic reticulum performs many important functions in a cell including: > Manufacture Lipids > Metabolize Lipids> Produce Steroids> Detoxify Many Organic Chemicals> Store and Release Calcium Ions> Can Manufacture Phospholipid Membranes For the Cell Membrane and Other Organelles The Cellular Superhighway The Cellular Superhighway Micrograph taken by Gwen V. Childs, Ph.D. and posted on the UTMB website. In the center of the electron micrograph below, the top of the smooth endoplasmic reticulum can be seen The function of a Smooth ER dependson the type of organ or part of the bodyit is in. Type of Human Cell Type of Human Cell Smooth ER Function(s) Liver Cell Detoxification of Organic Chemicals Muscle Cell Storage and Release ofCalcium Ions Reproductive Organ Cells Release of the steroidsEstrogen (Females)Testosterone (Males) The Smooth ER cannot make proteins because it lacks the ribosomes that the Rough ER has bound to it. Becausethe Smooth ER lacks ribosomes it has a flatter appearance to it and is referred to as being smooth. The Smooth ER is made up of a flexible membranethat has many folds to increase surface area. The more surface area the Smooth ER has, the more efficientit can be.It is made up of a series of tubes which are thought to have special sections that produce specific things that the cellneeds. After the product is complete, a section of the Smooth ER'smembrane will form a vesicle to protect and transport the product to its specific location. If the product is being exportedout of the cell, the vesicle will fuse with the cell membrane. Sourceswiki.pingry.orgReece, Jane B., and Neil A. Campbell. Campbell Biology: Concepts and Connections. Boston: Benjamin Cummings, 2015.
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