Overview
Ciliary movement is a type of cell movement used by some single-celled organisms such as protists, as well as by certain types of cells in multicellular organisms such as those in our respiratory system. It describes the movement of cilia, tiny hairlike projections from the surface of the cell, which beat rhythmically in a wavelike fashion. This movement is used to clear away particles and mucus from passages, as well as to transport particles and organisms through the surrounding liquid. Ciliary movement is essential for the health of many organisms by facilitating the uptake of needed nutrients while expelling harmful particles and organisms. In humans, ciliary movement is vital for clearing mucus from the respiratory tract, aiding in the function of our lungs and helping to protect us from infection.