Pseudostratified Columnar Epithelium
- Single layer of cells differing in heights, some may not reach free surface
- Nuclei seen at different levels
- May contain mucus-secreting cells and cilia
- Function: secretion particularly of mucus, propulsion of mucus by ciliary action.
- Nonciliated: in male's sperm-carrying ducts and ducts of large glands.
- Ciliated: lines the trachea and most of upper respiratory tract.