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Epithelial Tissue
Different types of epithelia, their location, and their function
Term | Definition |
---|---|
one layer of cells | simple epithelium |
several layers of cells | stratified epithelium |
thin and flat shape | squamous epithelia |
square/cube-like shape | cuboidal epithelia |
tall, slender rectangles like a column | columnar epithelia |
found lining ventral body cavities, lining heart and blood vessels, portions of kidney tubules, inner lining of cornea and alveoli | simple squamous |
functions as reduces friction, controls vessel permeability, performs absorption and secretion | simple squamous |
located in the glands and ducts, portions of kidney tubules, and thyroid gland | simple cuboidal |
functions as limited protection, secretion and absorption | simple cuboidal |
located in the lining of the stomach, intestines, gallbladder, uterine tubes, and collecting ducts of kidneys | simple columnar |
functions as protection, secretion and absorption | simple columnar |
located on surface of skin, lining of mouth, throat, esophagus, rectum, anus and vagina | stratified squamous |
functions as physical protection against abrasion, pathogens and chemical attack | stratified squamous |
located in the lining of nasal cavity, trachea, and bronchi; portions of the male reproductive tract | pseudostratified ciliated columnar |
functions as protection, secretion and moves mucus with cilia | pseudostratified ciliated columnar |
located in urinary bladder, renal pelvis and ureters | transitional epithelium |
permits expansion and recoil after stretching | transitional epithelium |