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- Simple Squamous Epithelium:
- Location: Found in the air sacs of lungs and the lining of heart, blood vessels, and lymphatic vessels.
- Function: Allows for the passage of materials by diffusion and filtration, and secretes lubricating substances.
- Simple Cuboidal Epithelium:
- Location: Present in ducts and secretory portions of small glands, and in the kidney.
- Function: Involved in secretion and absorption, and secretes mucous and enzymes.
- Simple Columnar Epithelium:
- Location: Found in the lining of the digestive tract and the bladder.
- Function: Secretes and absorbs, also secretes mucous and enzymes.
- Ciliated Pseudostratified Columnar Epithelium:
- Location: Lines the trachea and much of the upper respiratory tract.
- Function: Secretes mucus; ciliated tissue moves mucus.
- Stratified Squamous Epithelium:
- Location: Lines the esophagus, mouth, and vagina.
- Function: Provides protection against abrasion.
- Stratified Cuboidal Epithelium:
- Location: Found in sweat glands, salivary glands, and mammary glands.
- Function: Serves as protective tissue.
- Stratified Columnar Epithelium:
- Location: Present in the male urethra and the ducts of some glands.
- Function: Involved in secretion and protection.
- Transitional Epithelium:
- Location: Lines the bladder, urethra, and ureters.
- Function: Allows the urinary organs to expand and stretch.
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