Numerous short extensions of the [[plasma membrane]] used for locomotion and other purposes.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref>
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'''Cilia''' are numerous short extensions of the [[plasma membrane]] used for locomotion and other purposes.<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref>
Most ''mucous membranes,'' such as those in the nose, are covered with cilia to create a constant flow of mucus.
Most ''mucous membranes,'' such as those in the nose, are covered with cilia to create a constant flow of mucus.