Multilayered Pseudostratified Columnar Epithelium-Trachea

This type of epithelium is characteristic of parts of the respirator y tract (respiratory epithelium). In this form of epithelium, all cells touch the basement membrane but reach different heights. Therefore, the cell nuclei are not only visible in one or two, but at least in three layers. There are small, usually round basal cells 1 , intermediary cells in the form of pyramids or spindles 2  and long columnar cells 3 . The long columnar cells are ciliate d 3 (kinocilia)  . Heavily stained lines at the apex of cilia cells correspond to rows of basal bodies 4 . Underneath the epithelial cells is a thick lamina propria mucosae.

1 Basal cells          3 Kinocilia             2 Surface cells           4 Basal bodies        5 Goblet-cell nucleus           6 Lamina propria mucosae         7 Vessel

Stain: azan; magnification: × 400

References

Kuehnel, W.(2003). Color Atlas of Cytology, Histology, and Microscopic Anatomy. 4^th edition . Institute of Anatomy Universitätzu Luebeck Luebeck, Germany . Thieme Stuttgar t · New York .

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