GENERAL HISTOLOGY

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: -Microfilaments are fine, thread-like protein fibers, 3-6 nm in diameter. They are composed predominantly of a contractile protein called actin, which is the most abundant cellular protein. Microfilaments’ association with the protein myosin is responsible for muscle contraction.

Detailed explanation-3: -Microfilaments are polymers of the protein actin and are 7 nm in diameter. Microtubules are composed of tubulin and are 25 nm in diameter. Intermediate filaments are composed of various proteins, depending on the type of cell in which they are found; they are normally 8-12 nm in diameter.

Detailed explanation-4: -The intermediate filaments are ropelike fibres with a diameter of about 10nm. The strands of the rope are elongated fibrous protiens. Each of these elongated fibrous proteins are composed of an N-terminal globular head, a C-terminal globular tall and a central elongated rod domain.