Quiz # 1 Epithelial And Connective Tissues Flashcards
Simple Squamous Epithelia (Location and Function)
Location: Alveoli of the lung, inner lining of the cornea of the eye, mesothelial lining of ventral body cavities, and endothelial lining of the heart and the blood vessels Functions: Filtration, diffusion, secretion, cover (not available in areas of wear and tear)
Stratified Squamous Epithelia
Location: Surface of the skin, lining of the mouth, anus, and vagina Function: Protection against mechanical stress/abrasions/ water loss/ UV radiation/and foreign invasion
Simple cuboidal epithelia
Location: portions of the kidney tubules, various glands and ducts Function: secretion of products ( Secretion and absorption)
Stratified cuboidal epithelia
Location: lining ducts of adult sweat glands, esophageal glands, part of male urethra (very rare) Function: (Protection and limited secretion)
Transitional Epithelia
Location: Urinary Bladder, renal pelvis, and portions of the ureters and urethra Function: allows urinary organs to stretch to hold variable amounts of fluid without rupturing and serves as a protective lining
Transitional Epithelia Morphological Change
Stretched: Simple Squamous vs Non-Stretched: Cuboidal/Columnar
Simple columnar epithelia
Location: gastrointestinal lining, ducts of many excretory glands, and gallbladder Function: secretion and absorption Typically larger and contain more organelles (higher secretion than cuboidal cells)
Pseudostratified ciliated columnar epithelia
Location: trachea, nasopharynx, bronchi of upper respiratory tract Function: cilia move mucus and foreign particles away from site, coughing speeds up the movement of cilia, cilia move oocytes through fallopian tube
Stratified Columnar Epithelia
Location: Ducts of salivary glands, small areas of anal mucous membrane, mammary ducts, and urethra Function: protection and secretion
Basement membrane
Lies between epithelia and connective tissue (the basement membrane is non-living).
