MICROANATOMY

Detailed explanation-1: -Microtubules, the third principal component of the cytoskeleton, are rigid hollow rods approximately 25 nm in diameter. Like actin filaments, microtubules are dynamic structures that undergo continual assembly and disassembly within the cell.

Detailed explanation-2: -Microtubules. As their name implies, microtubules are small hollow tubes. The walls of the microtubule are made of polymerized dimers of -tubulin and -tubulin, two globular proteins (Figure). With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton.

Detailed explanation-3: -Microtubules are the thickest of the cytoskeletal fibers. These are hollow tubes that can dissolve and reform quickly. Microtubules guide organelle movement and are the structures that pull chromosomes to their poles during cell division. They are also the structural components of flagella and cilia.