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Epithelium Chart Mrs. Donohue Simple Squamous • Location: • Forms lining of mouth and blood vessels • Heart and lungs • Function: • Promotes diffusion of gases & liquids • protection Simple Squamous Simple Cuboidal • Location: • Ducts of Glands • lining of kidney tubules • Germinal – helps produce egg and sperm • Function: • Absorption of nutrients • Excretion of waste products • reabsorption Simple Cuboidal Simple Columnar • Location: • Forms lining of stomach & intestine • Gastric ulcers • Nose, ears, & taste buds • Function: • Absorbs nutrients from digestion of food • Sensory reception Pseudostratified Columnar • Picture: nucleus on different layers • ciliated • Location: • Respiratory epididymis • Function: • Makes mucus flow • Remove dust & bacteria Stratified or Compound Squamous • Location • Keratinized (impervious to water) – skin • Non-keratinized • Lines mouth, throat, nose, vagina & anus • Function: • Helps with abrasion • Protection • sensation Stratified Squamous Stratified or Compound Columnar • Location: • Tubules of testes • Ducts of some glands • Urinary & respiratory tract • Function: • Withstands wear and tear • protection Transitional • Diagram: lots of cytoplasm • Looks swollen • Location: • Urinary tract (stretched or relaxed) • Function: • Can change shape from cuboidal to squamous • Distends! Transitional
