Ciliated Epithelium

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ciliated epithelium

[′sil·ē‚ād·əd ep·ə′thēl·ē·əm]
Epithelium composed of cells bearing cilia on their free surfaces.

Ciliated Epithelium


in animals and man, epithelial tissue whose cells are furnished with cilia.

The movements of the cilia of each epithelial cell and of the epithelial layer as a whole are closely coordinated. Each cilium is ahead of the next in its phase of movement by a certain length of time, so that the movement of the surface of the layer as a whole appears wavelike. Ciliated epithelium lines the respiratory passages, part of the genitourinary tract, the eustachian tube, part of the tympanic cavity, the central canal of the spinal cord, and the ventricles of the brain. In some animals it is found in the integuments (for locomotion) and in the alimentary canal. The motion of the cilia moves the liquid medium and the solid particles in it. Thus, for example, the cilia help remove dust from the respiratory passages.

On the basis of electron microscopy, scientists have advanced hypotheses suggesting a link between the coordinated movement of the cilia and the breakdown of adenosine triphosphate (ATP). However, the phase of the movement (contraction or relaxation) at which the ATP is utilized has not yet been determined.


Shmagina, A. P. Mertsatel’noe dvizhenie. Moscow, 1948.
Arronet, N. I. Myshechnye i kletochnye sokratitel’nye (dvigatel’nye) modeli. Leningrad, 1971.


References in periodicals archive ?
In our previous studies, however, we presented evidence that the horizontal muscular system underlying the ciliated epithelium in the foot sole of L.
Nonneoplastic cysts may be lined by acinar cells, columnar mucin-producing cells, or ciliated epithelium.
Histologic examination of a cyst wall biopsy specimen identified fibrous tissue with chronic inflammation and a focus of ciliated epithelium consistent with a mucocele.
Histopathology revealed a cyst lined by pseudostratified ciliated epithelium showing smooth muscle suggestive of a benign bronchogenic cyst (Fig.
We found that (1) in most cases, the types of epithelium were generally the same in both areas--pseudostratified cylindrical ciliated epithelium with goblet cells (respiratory epithelium), stratified cuboidal epithelium, and stratified squamous nonkeratinized epithelium; (2) the APINC had more respiratory epithelium than the APS; (3) the APS had more squamous epithelium than the APINC; (4) the basement membrane of the APINC was thicker than that of the APS; (5) moderate chronic inflammatory infiltrate was more common in the APINc, and mild infiltrate was more common in the APS; and (6) the APINC had more mucous glands and the APS had more serous glands.
Despite the fact that most nasopharyngeal carcinomas arise from the lateral wall which is lined by secretory pseudostratified ciliated epithelium of respiratory type, adenocarcinoma of the nasopharynx is a rare tumor both in areas of the Far East, with high prevalence of nasopharyngeal carcinoma, and in the western world.
The cysts are lined by pseudostratified columnar ciliated epithelium, overlying a relatively prominent fibro muscular layer and occasionally produce mucin.
Pathology of nasopharyngeal branchial cleft cyst is stratified squamous or columnar ciliated epithelium overlying a rich lymphoid tissue.
The most dramatic consequence of this process is the loss of the light organ's superficial ciliated epithelium, resulting in a remodeling of the organ accompanied by hemocyte infiltration into this tissue and apoptosis of associated cells.