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A cilium (Latin for eyelash;〔Mosby’s Medical, Nursing and Allied Health Dictionary, Fourth Edition, Mosby-Year Book Inc., 1994, p. 336〕 the plural is cilia) is an organelle found in eukaryotic cells. Cilia are thick protuberances that project from the much larger cell body.〔 There are two types of cilia: ''motile'' cilia and ''non-motile'', or primary cilia, which typically serve as sensory organelles. In eukaryotes, motile cilia and flagella together make up a group of organelles known as undulipodia.〔 (A Dictionary of Biology ), 2004, accessed 2010-04-06.〕 Eukaryotic cilia are structurally identical to Eukaryotic flagella, although distinctions are sometimes made according to function and/or length.〔 〕 For information on biologists' ideas about how the various flagella may have evolved, see evolution of flagella. == Types and distribution == Cilia can be divided into primary and motile forms. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cilium」の詳細全文を読む スポンサード リンク
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