mikrovillidele

Mikrovillidele are microscopic, finger-like projections that extend from the surface of certain cells. Their primary function is to increase the surface area available for absorption or secretion. These structures are particularly abundant in cells lining the small intestine, where they play a crucial role in nutrient absorption. The increased surface area provided by mikrovillidele significantly enhances the efficiency of the transport of digested food molecules from the intestinal lumen into the bloodstream.

In addition to the small intestine, mikrovillidele are also found on the surface of cells in other tissues, such as the kidney tubules, where they aid in reabsorption and secretion processes, and in the inner ear, where they contribute to sensory perception. The structure of mikrovillidele is supported by a core of actin filaments, which provides them with a degree of rigidity and allows for some movement. This cellular adaptation is a prime example of how specialized structures can optimize cellular function for specific physiological tasks.