BSC 469- Final Exam Guide - Comprehensive Notes for the exam ( 55 pages long!)
30 Nov 2017
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Simple squamous: some endothelial tissues have special names depending on the location in the body, endothelium lining blood vessels, mesothelium serous membranes, functions in simple diffusion. Simple cuboidal: kidney tubules, ducts of glans, functions in secretion or absorption. Simple columnar: gastrointestinal tract, functions in secretion or absorption. Ciliated columnar: cilia moves substances or cells through passageway. Pseudostratified epithelium: cells vary in height; all cells rest on basement membrane but only tallest reach the surface, ciliated trachea, bronchi. Stratified squamous: located in areas subjected to wear and tear, surface cells constantly rubbed away; cells replaced by basal cells, functions in protection, keratinized vs non-keratinized. Tissue preparation: steps in tissue slide preparation, tissue procurement, tissue must be as fresh as possible, fixation, the preservative must penetrate the tissue quickly and thoroughly. Most fixatives are usually precipitates, coagulants, or cross-linking agents. Proteins are immediately denatured and hardened into position when exposed to such fixatives.
