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Explanation of the term cell movements

Give a brief explanation of the term cell movements. How are such movements generated?

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Cell movements are movements carried out by cell structures, like the movements of flagella and cilia, the pseudopod movements (in the amoeba, macrophages, and so forth.), the cyclosis of cytoplasm and sarcomere contraction in the muscle cells.

Cell movements can be generated through the cytoskeleton action, by differences of the viscosity among cytoplasmic regions and through intracellular contraction systems.

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