Epithelial Tissue

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Epithelial Tissue
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Terms in this set (34)
Simple squamousmay be located in several areas In the lining blood vessels where it is called endothelium Mesothelium is another name for simple squamous, which may be found Lining the peritoneal, pleural, and pericardial cavities Lining the interior of Bowman's capsule in kidneysSimple squamous epithelium: Is located in the peritoneal cavity, where it functions in several ways:Aids smooth movement of viscera Reduces friction between organs Allows for fluid transportSimple squamous epithelium located in the cardiovascular systemAllows for passive transport of fluids, nutrients, or metabolites across capillary wallsIn the lungs simple squamous epithelial tissueprovides for efficient gaseous exchange across capillaries and alveoliSimple squamous major function in these areasinclude exchange, and a a barrier to other systems ( such as the nervous system)Simple columnarFound in secretory and absorptive tissue Such as the surface of the stomach, small and large intestine and the gallbladderSimple columnar major functionSimple columnar: Simple columnar epithelium can also secrete and absorb depending on its locationSimple columnar major function In the lining of the stomach the cellsare secretory and produce mucusSimple columnar major function In the small intestineabsorption of nutrients occursSimple columnar major function In the trachea and bronchi as well as oviduct and uterus,secretion occursSimple cuboidal epithelium:Primary function of secretion and absorption (as in the kidney tubulesStratified epithelium:Is the chief protective epithelium of the body Exist in two forms: keratinized and non-keratinizedStratified epithelium:Adapted to withstand wear and tear in the moist cavities of the body Serves a protective function in these regions On the skin surface provides additional protection form abrasion, desiccation or bacterial invasion of the boKeratinis a tough non living surface layer Which is the major structural protein of the epidermisNon-keratinizedLines moist cavities such as: The mouth, pharynx Esophagus, vagina, and part of the anal canal Major function in these areas is to serve as a barrier, and protectionStratified cuboidal and columnar epitheliumAre found as the lining of excretory ducts of pancreas, salivary glands and sweat glands Major function is these areas is to serve as a barrier or conduitPseuodostratified epitheliumThis type of epithelium gives the impression of consisting of several layers when in actually it has a single layer of cells Found lining respiratory passages in the lumina of epididymis, vas deferens and penile urethra In the epididymis and vas deferens it has non-motile stereo-cilia It may be ciliated as in the trachea, bronchi, and larger bronchiolPseudostratified columnar ciliated epithelium:In the respiratory passagescontains ciliated cells Which cleanse the inspired air and conduct mucus and particulate material across the cell surfaces to the exterior of the bodyPseudostratified columnar In the epididymis and vas deferensit contains sterocila, which absorb fluids produced by the testesPseudostratified columnar In the uterine tubes ciliaconduct the ovulated oocyte and sperm across their surfacesPseudostratified columnar In the efferent ductules of the testes,transport sperm out of the testis and into the epididymisTransitional epithelium:This is a special type of epithelium Because this epithelium changes shape And can resemble stratified squamous and stratified columnar epithelium found lining renal calyces, ureters, urinary bladder and portion of the urethraTransitional epithelium:Major functionis to allow distention in the urinary organs during accumulation of urine and contraction during emptying of the urinary passages