2 Tubular structures composed of tubulin. Involved in mobility and in the maintenance of cellular integrity. 1 Tubular structures composed of tubulin. Involved in mobility and in the maintenance of cellular integrity. Microvilli 14 Surface specializations to increase absorption.
Glycosylated proteins are abundant.
Actin forms the core. 1 Surface specializations to increase absorption. Actin forms the core. Sometimes they are large, possibly to provide greater absorptive surface. Hair cells of the inner ear also have giant microvilli, but they are stiff and form a rigid bundle.