What is this carpet made of? Microvilli (1) and
cilia (2) are seen on the same photomicrographs.
Do not mistake cilia (2) and microvilli (1): cilia possess
10 pairs of microtubules (a) (one central pair surrounded by the 9 others)
that run throughout their length.
Microvilli do not: inside the microvilli, you just see
cytoplasm. Observe the plasma membrane (b) around the cilia.