CELL ORGANELLES: smooth endoplasmic reticulum

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ALL CELLS / Animal Cell : nucleus / nucleolus / nuclear envelope / nuclear pore / centrioles / cell membrane / microtubule / smooth endoplasmic reticulum / rough endoplasmic reticulum / ribosomes / polysomes / lysosome / peroxisome / mitochondrion / Golgi /

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ORGANELLE DIAGRAM: SMOOTH ENDOPLASMIC RETICULUM: In this picture, the smooth endoplasmic reticulum is seen as a tangle of pink interconnected tubules. Unlike the rough ER, it lacks ribosomes. The smooth ER is continuous with the rough ER but has different functions.

SUMMARY

• name(s): smooth endoplasmic reticulum, smooth ER, tubular endoplasmic reticulum, agranular endoplasmic reticulum
• location: in cytoplasm
• appearance: interconnected and ramifying tubules; no ribosomes
• size: tubules are about 150nm in diameter (variable)
• function: used in lipid synthesis, detoxification and other metabolic processes.

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