There are 4 main functions of microtubules:
1.To form an architectural framework that establishes the overall polarity of the cell
2. To form the spindle apparatus and ensure the proper segregation of duplicated chromosomes into daughter cells during cell division
3.To form an internal transport network for the trafficking of vesicles containing essential materials to the rest of the cell.
4. To form a rigid internal core that is used by microtubule-associated motor proteins to generate force and movement in motile structures such as cilia and flagella.
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