Pseudostratified columnar epithelium and where found

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Pseudostratified columnar epithelium

Pseudostratified columnar epithelium

appears to be stratified, but is
made of one row of columnar cells with varying heights

Pseudostratified columnar epithelium

Usually the cells
have cilia, and some cells are modified to form goblet cells.

Pseudostratified columnar epithelium

Location - lining of trachea

Pseudostratified columnar epithelium

Single layer of cells of differing heights, some not reaching the free surface. All are attached to the basement membrane.

Pseudostratified columnar epithelium

Nuclei seen at different levels. May contain goblet cells and may have cilia.

Pseudostratified columnar epithelium

Functions -- secretion. Particularly of mucus. Propulsion of mucus by ciliary action

Pseudostratified columnar epithelium

Ciliated type found in trachea and most of upper respiratory tract

Pseudostratified columnar epithelium

non-ciliated type in sperm carrying ducts and in larger ducts

Pseudostratified columnar epithelium

Can be found in such places as the nasal septum, trachea, and bronchi

Pseudostratified columnar epithelium

If found in respiratory area, trap and move "pollutants" to the mouth where they are swallowed

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