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Show Summary Details Overview ciliated epithelium. Reference entries ciliated epithelium in A Dictionary of Biology 6 Length: 58 words. View all related items in Oxford Reference » Search for: 'ciliated epithelium' in Oxford Reference ». All rights reserved. Sign in to annotate. Delete Cancel Save. These pulmonary epithelial cells are always believed to be terminally differentiated cells that never divide.
But data from Park suggested that the ciliated cells undergo morphological transitions from squamous to cuboidal to columnar forms because the bronchiolar epithelium is restored after the tissue damage, indicating the differentiation potential. Pseudostratified ciliated columnar epithelia are the tissues that are formed by only one layer of cells and give the appearance of being made from multiple layers, especially when seen in a cross-section. The nuclei of the epithelial cells are at very different levels that will lead to the illusion of being stratified.
However, the ciliated epithelial tissue is made of a single layer of cells, whereas the cells do not share a common apical surface. Every cell is in contact with the basement membrane. It is rarely found that pseudostratified epithelia are made from cuboidal or squamous cells. Therefore, the common subtype is the pseudostratified columnar epithelium. This particular tissue is found in the regions where there is a need to secrete mucus for trapping the foreign bodies and also sweep those particles away through the coordinated action of cilia.
They are also seen in the places where the epithelia have a combined secretory and also absorptive function. Such as in the vas deferens and the epididymis. These types of tissues usually contain stereocilia, which are cytoplasmic projections made of actin microfibrils. Mostly, these tissues are made of goblet-shaped cells that secrete mucus and longer columnar cells.
It traverses the entire epithelium. They also contain short basal cells whose apical surfaces never reach the lumen. Basal cells can be precursors of goblet cells or columnar cells. Cilia play an important role in locomotion that includes movement of the cell itself, or other substances and objects past the cell.
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