cilium


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Related to cilium: selenium, psyllium husk

cilium

 [sil´e-um] (L.)
singular of cilia.

cil·i·um

, pl.

cil·i·a

(sil'ē-ŭm, -ă), Do not confuse this word with psyllium.
1. Synonym(s): eyelash
2. A motile extension of a cell surface, for example, of certain epithelial cells, containing nine longitudinal double microtubules arranged in a peripheral ring, together with a central pair.
[L. an eyelid]

cilium

/cil·i·um/ (sil´e-um) [L.] singular of cilia.

cilium

(sĭl′ē-əm)
n. pl. cil·ia (-ē-ə)
1. A microscopic hairlike process extending from the surface of a cell or unicellular organism. Capable of rhythmical motion, it acts in unison with other such structures to bring about the movement of the cell or of the surrounding medium.
2. An eyelash.
3. Botany One of the hairs along the margin or edge of a structure, such as a leaf, usually forming a fringe.

cilium

See cilia.

cil·i·um

, pl. cilia (sil'ē-ŭm, -ă)
1. Synonym(s): eyelash.
2. A motile extension of a cell surface, e.g., of certain epithelial cells, containing nine longitudinal double microtubules arranged in a peripheral ring, together with a central pair.
[L. an eyelid]
Ciliumclick for a larger image
Fig. 103 Cilium . (a) Vertical section. (b) Transverse section.

cilium

(pl. cilia) a fine cytoplasmic structure in the form of a thread which projects from the surface of cells. Each cell may bear numerous cilia which beat constantly in one direction, either moving liquid over the surface of the cells concerned or moving the cell(s) in relation to the liquid, for example, locomotion in PROTOZOANS. They are also present in all Metazoa except the ARTHROPODS and NEMATODES, but in only a few plants, for example, cycads. The cilium has a similar structure to the FLAGELLUM, consisting of an outer membrane surrounding a matrix containing two central MICROTUBULES around which is a ring of nine more microtubules (a ‘9 + 2’ structure). At the base of the cilium is a basal body concerned with ATP production.

cilium

motile extensions of some cell types (e.g. ciliated epithelium)

cilium 

An eyelash (plural: cilia).

cilium

pl. cilia [L.] see cilia.
References in periodicals archive ?
Experimental data show that CDKs can be theoretically unified in the genes implicated in each case (40); proteins encoded by these genes are localized on renal epithelial cells and specifically on the primary cilium itself or the basal body and centrosome, with the only known exception being the gene product of MCKD2, Tamm-Horsfall protein (THP).
The membrane covering the cilium structure maintains its continuity to the rest of the plasma membrane, except that it has different constitution with many molecules that allow the cilium to function as a cell mechanosensor, sensing and interpreting urine flow and composition.
According to the cilia-cyst theory, altered protein products as a result of mutated genes implicated in CDKs have significant consequences toward the cilium or the basal bodies.
Despite research progress of cystogenesis in ADPKD, it is unclear how defects in primary cilium signaling affect downstream pathways.
73) It can be colocalized with PC-1 on the primary cilium or in the centrosome but can also function singly or by interacting with other potential partners in the ER.
96) In renal epithelial cells, at least part of fibrocystin/polyductin is localized to the renal epithelial primary cilium and the centrosome.
100) The localization to the cilium of nephronophthisis proteins that are differentially expressed in various tissues is thought to constitute the primary connection among different disease types, their histologic and ultrasonographic picture, and the tissue of supplemental symptoms.
41,146,148) UMOD is the only known cystic kidney disease-related gene that is not expressed in the cilium of tubular epithelial cells.
Previous research in other laboratories suggests that a fixed pore exists at the base of a cilium that only allows relatively small molecules inside.