MICROANATOMY

Detailed explanation-1: -There are three types of fibers within the cytoskeleton: microfilaments, intermediate filaments, and microtubules (Figure 4.5. 1).

Detailed explanation-2: -In contrast to intermediate filaments, which are composed of a variety of different fibrous proteins, microtubules are composed of a single type of globular protein, called tubulin. Tubulin is a dimer consisting of two closely related 55-kd polypeptides, -tubulin and -tubulin.

Detailed explanation-3: -There are three types of spindle microtubules: the kinetochore microtubules (K), polar microtubules (P), and astral microtubules (A).

Detailed explanation-4: -Conclusion. The cytoskeleton of a cell is made up of microtubules, actin filaments, and intermediate filaments. These structures give the cell its shape and help organize the cell’s parts. In addition, they provide a basis for movement and cell division.