pseuodstratifikált

Pseudostratified is a term used in biology, particularly in histology, to describe a type of epithelial tissue. This tissue appears to be stratified, meaning it has multiple layers, when viewed under a microscope. However, upon closer examination, all the cells in this epithelium are actually in direct contact with the basement membrane, which is the layer of connective tissue underlying the epithelium. The nuclei of the cells are found at different levels within the epithelium, creating the illusion of stratification. This arrangement is common in the lining of the respiratory tract, such as the trachea and bronchi, where it plays a role in mucus production and movement. The cilia that often adorn the apical surface of pseudostratified columnar epithelium help to sweep mucus and trapped particles away from the lungs. While most commonly found in the respiratory system, variations of pseudostratified epithelium can also be observed in other locations in the body. The term itself, "pseudostratified," directly translates to "false-layered," accurately reflecting its unique histological appearance.