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The cytoskeleton is composed of Actin filaments, microtubules and intermediate filaments.

Actin is essential in resistance to and distribution of physical stresses and for movement in some Cells such as immune Cells. It is also important for orientation in Cells such as columnar epithelial Cells. Actin combines with Myosin to produce Motile Elements - such as -

Microtubules are used to transport materials and organelles around the Cell. Microtubules are also essential in the separation of sister chromatids during anaphase in Cells that undergo Cell division.

Intermediate filaments are more complex in structure than Actin and MTs and far more varied but are still dynamic. IFs are important in the interactions between Cells to make up tissues and organs. Because of their varied functions they are divided into classes (Types I to V).

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12y ago

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