Cellular Structure

Question 6 - Single Best Answer

Identify the structure at the tip of the arrow:

B) microvilli

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Microvilli are cytoplasmic extensions into the lumen of tissues which function in absorption (i.e., intestines). They are typically much shorter, much more numerous, and less flexible than cilia. In addition, large numbers of microvilli are responsible for the brush and striated borders of the kidney and intestinal epithelium, respectively.