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Epithelial tissues are classified by the number of cell layers (simple, stratified, pseudostratified), the cell shapes (squamous, cuboidal, columnar), and the functions of the cells.
This document was complied for the APES1000A course (WITS) but is comprehensive enough to serve as a valuable guide + supplement for any 1st year biology half course. The notes contain details and diagrams on the following sub sections: Tissue types & cell junctions Epithelial tissue Connective tissue Nervous tissue Muscle tissue Skin as an organ