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

(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.

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 

An eyelash (plural: cilia).
References in periodicals archive ?
Intraocular cilium may have various clinical presentations requiring an individualized approach for each patient.
Control of Energy Homeostasis by the Primary Cilium at the Hypothalamic Level.
Long term inflammation associated with foreign bodies like embedded cilium may cause unusual presentations like symblepheron as in this case.
It has been shown that PC-1 senses nephron and collecting duct urine flow with its long extracellular N-terminal domain while PC-2 responds to this stimulus by generating a [Ca.sup.2+] influx through the cilium and into the renal epithelial cells.
Considering the history of trauma, the cilium was probably mechanically embedded on the cornea at the time of injury
"A cilium forms like a short drinking straw being pushed outwards from inside an inflated balloon.
The total arc of beat at the base of a prototrochal cilium exceeds 200[degrees] (Fig.
Dalby et al.; "Adipogenic differentiation of hMSCs is mediated by recruitment of IGF-1R onto the primary cilium associated with elongation"; Stem Cells, 2015, DOI: 10.1002/stem.1975 Abstract: http://dx.doi.org/10.1002/stem.1975 Contact: Stephen D.
Most cells in our body project a single, non-moving cilium used as a tiny antenna for detecting chemical and physical stimuli.
Direct interception requires motion of a structure (in this case a cilium) relative to a particle and adhesion between the structure and particle once contact is made.
The unexpected connection between the primary cilium and cell-to-cell signalling is one of the most exciting discoveries in cell and developmental biology in the last decade.