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4 kwi 2017 · The cytoskeleton is a network of filaments and tubules that extends throughout a cell, through the cytoplasm, which is all of the material within a cell except for the nucleus. It is found in all cells, though the proteins that it is made of vary between organisms.
Collectively, this network of protein fibers is known as the cytoskeleton. There are three types of fibers within the cytoskeleton: microfilaments, intermediate filaments, and microtubules (Figure \(\PageIndex{1}\)). Here, we will examine each.
The cytoskeleton is a network of different protein fibers that provides many functions: it maintains or changes the shape of the cell; it secures some organelles in specific positions; it enables movement of cytoplasm and vesicles within the cell; and it enables the cell to move in response to stimuli.
The cytoskeletal “highways” help provide structure and connection within the cell and between cells. The cytoskeleton influences the shape of the cell and aids in the relay of signals from one part of the cell to another. The cytoskeleton helps cells grow, move, retract, and even die.
This painting is a conceptual image of the cytoplasm of a human cell. Three types of cytoskeletal filaments are shown: (A) actin, (B) intermediate filament, and (C) microtubule. The end of one actin filament is being extended with the help of (D) formin, and other filaments have (E) capping protein at their ends.
7 mar 2022 · Definition, Structure, Functions and Diagram of Cytoskeleton. Microtubules, Microfilaments, Intermediate Filaments, Microtrabecular Lattice.
