epithelial tissues

epithelial tissues

1. different types of epithelial tissues

   • simple
     • single layer
       • simple squamous
         • Kidney glomeruli (Filtration of blood to make urine) • Air sac of Lung (Gas exchange) • Lining of lymphatic vessels, heart and blood vessels (Endothelium) • Serosae (Mesothelium)
       • simple cuboidal
         • Kidney Tubules • Duct and secretory portions of small gland • Ovary surface
       • simple columnar
         • ciliated
           • Small bronchi, uterine tubes and some regions of the uterus
         • non ciliated
           • Digestive tract (Stomach to rectum), Gallbladder, Excretory ducts of some glands
   • stratified
     • multiple layer
       • stratified squamous
         • keratinized
           • skin
         • non keratinized
           • esophagus, mouth, vagina
       • stratified cuboidal
         • ducts of some of larger glands (Sweat glands, mammary glands)
       • startified columnar
         • Small amount found in pharynx, the male urethra and lining some glandular ducts
     • transitional
       • ureters, bladder and part of the urethra
   • Pseudostratified Columnar
     • single layer
       • locations
         • ciliated
           • Trachea and most of upper respiratory tract
         • non- ciliated
           • sperm-carrying ducts and ducts of large glands

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