Cytoskeleton

The thickest of the three components of the cytoskeleton

• Microtubules

• Microfilaments

• Intermediate filaments

The thinnest of the three components of the cytoskeleton

• Microtubules

• Microfilaments

• Intermediate filaments

Fibers with diameters in a middle range

• Microtubules

• Microfilaments

• Intermediate filaments

Provide mechanical stability and resistance to shear stress

• Microtubules

• Microfilaments

• Intermediate filaments

**************************** determine the positions of membranous organelles and direct intracellular transport

• Microtubules

• Microfilaments

• Intermediate filaments

**************************** determine the shape of the cell’s surface and are necessary for whole-cell locomotion

• Microtubules

• Microfilaments

• Intermediate filaments

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• Microtubule

• Myosin

• Kinesin

• Dynein

Hollow, cylindrical structure of polymerized α- and β-tubulin dimers with polarized ends

• Microtubules

• Microfilaments

• Intermediate filaments

Helical structure of strands of polymerized actin subunits with polarized ends

• Microtubules

• Microfilaments

• Intermediate filaments

Made from strands of anti-parallel tetramers, which are composed of a variety of proteins (e.g., vimentin, desmin, keratin, neurofilament, glial fibrillary acid proteins) depending on the specific cell

• Microtubules

• Microfilaments

• Intermediate filaments