Which of the following is true regarding apical surface features of epithelium?
A) Microvilli are highly motile apical extensions that bend and move in coordinated waves.
B) Cilia are most prominent in epithelium that absorbs nutrients.
C) Microvilli are longer and more flexible than cilia.
D) Cilia move in a specific sequence in order to move fluid along the epithelium surface in only one direction.
E) The primary function of cilia is to increase surface area.

Question

Quizplus · Accepted Answer

Cilia are motile extensions found on the apical surface of epithelium and move in coordinated waves to move fluid along the surface in one direction, such as in the respiratory tract or fallopian tubes. Microvilli are stationary, shorter, and more numerous than cilia, and are involved in absorption and secretion.

Which of the Following Is True Regarding Apical Surface Features