Epithelial Tissue A215 LabWhat is Tissue? • Tissue = Similar cells that perform a common function • 4 Types: – Epithelium – Connective Tissue – Muscle – Nervous TissueEpithelium • Epithelium = Tissue lining cavities and surfaces of the body – One side of the epithelium is connected to a “basement membrane” – The other side is unbound – Trachea has epithelial lining to filter air of particulates that would harm the lung Can you think of any other specific organs or structures in the body with an epithelial layer?? Lumen of Trachea2 Groups of Epithelia SIMPLE 1 LAYER of cells composing the lining of surfaces or cavities STRATIFIED MULTIPLE LAYERS of similar cells lining surfaces and body cavities4 Types of SIMPLE EpitheliaYolk = nucleus White = cytoplasm Surrounding cells are simple cuboidalCiliaCilia 9 doublets +22 Types of STRATIFIED EpitheliaEpitheliaBinucleated cellBulgy BinucleatedWhat type of epithelia? Type of epithelia? Type of
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