Simple Squamous Epithelia

Simple Squamous Epithelia - columnar epithelial cells have...

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Simple Squamous Epithelia Mesothelium (epithelial layer of serous membranes) – secretion of serous fluid into serous cavity Alveoli (air sacs of lungs) – single layer of squamous cells creates a short distance for diffusion of oxygen and carbon dioxide Glomerular capsule (part of filtration membrane in kidney) – filtration of blood urine filtrate (substance that is converted into urine) Endothelium of capillaries – single layer of squamous cell secretes a short distance for diffusion of substances between blood and interstitial fluid (tissue fluid) Simple Cuboidal Epithelia Walls of kidney tubules – modify urine filtrate by absorption of substances from the filtrate and secretion of other substances into the filtrate Glands – secretion of products made by the simple cuboidal epithelial cells Simple Columnar Epithelia Lining of stomach and intestines – secretion of digestive juices by simple columnar cells and secretion of mucus by goblet cells. In the small intestine the simple columnar epithelial
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Unformatted text preview: columnar epithelial cells have microvilli to increase surface area for absorption Uterine tubes simple columnar epithelial cells have cilia that help move the egg to the uterus Central canal of spinal cord ciliated cells move cerebrospinal fluid Stratified Squamous Epithelia Surface of skin (keratinized stratified squamous epithelium) epithelial layer of skin is a tough, dry, waterproof outer surface that form a protective barrier Lining of mouth, esophagus, anus, and vagina (non-keratinized stratified squamous epithelium) moist epithelial layer that forms a protective barrier in areas subject to abrasion and friction Transitional Epithelia Lining of urinary bladder and parts of the ureters and the urethra provides a protective barrier that permits distension Pseudostratified Columnar Epithelia Lining of nasal cavity, trachea, and bronchi secretion of mucus by goblet cells. The columnar cells have cilia which move mucus toward the pharynx....
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