BIOL 260: Epithelial Tissue

Simple Squamous Epithelium

Where: lining body cavities, heart, and Bowman’s Capsule

For: Friction reduction, absorption, and secretion

Keratinized Stratified Squamous Epithelium

Where: Epidermis

For: Protection against abrasion, pathogens, and chemicals

Non-keratinized Stratified Squamous Epithelium

Where: Lining of mouth, esophagus, anus, and vagina

For: Protection against abrasion, pathogens, and chemicals

Simple Cuboidal Epithelium

Where: Thyroid gland, ducts, and kidney tubules

For: Secretion and absorption

Simple Columnar Epithelium

Where: Lining stomach, intestines, gallbladder, uterine tubules, and collecing ducts of the kidneys

For: Protection, secretion, and absorption

Pseudostratified Ciliated Columnar Epithelium

Where: trachea and upper respiratory tract

Why: Mucociliary tract removes foreign microbes from the respiratory tract

Transitional Epithelium

Where: Urinary bladder, renal pelvis, and ureters

For: Extensive stretching ability