Protists use cilia to move within their habitat,but ciliated human cells like those in the bronchi are always anchored to one another and to an extracellular matrix; what benefit does cilia provide these cells?
A) Ciliary movement can dislodge infective bacteria before they permanently fasten to the plasma membrane.
B) The oxygen content of the extracellular fluid can be increased by agitation with cilia.
C) Ciliary movement can create currents that move secretions like mucus over the surface of a tissue.
D) Ciliary movement can lead to the eventual release of cells from a cell layer when necessary.

Question

Quizplus · Accepted Answer

Ciliary movement can create currents that move secretions like mucus over the surface of a tissue. In the bronchi, ciliated cells work together to move mucus and other secretions out of the airways to prevent buildup and potential infection. The cilia beat in a coordinated motion to create a current that moves the mucus towards the throat where it can be swallowed or coughed out.

Protists Use Cilia to Move Within Their Habitat,but Ciliated Human