they are like the skeleton of a cell
IT WHERE U POPPY U PANTS
Microtubules are important for maintaining cell structure within the cell. Microtubules are made of tubulin. They also make up flagella. In animal cells, nine triplets of microtubules make up the two centrioles which are important in cell division. The mitotic spindle is made of microtubules which aid the cell replication process by pulling apart sister chromatids.
Inside microvilli you have actin, and inside cilia you have microtubules. Cilia are larger than microvilli, and cilia can be seen in the upper GI tract to beat away mucous which traps bacteria, virus, and other particles, microvilli is often seen in the intestines of the GI tract for nutrient absorption.Hope that helps!