A&P Histology

Extracellular, formed by secretions from epithelium and connective tissue
Attachment to connective tissue
Guides cell migration during tissue repair
Acts as a filter in nephron of kidney

•Protect underlying structures
•Act as barrier
•Permit the passage of substances (nephrons)
•Secrete substances
•Absorb substances

•One layer of cells, extends from basement membrane to free surface
•Allows diffusion of gases, filtration of blood, secretion, absorption

•More than one layer, includes transitional epithelium
•Protection, particularly against abrasion

•Tissue appears stratified, but all cells contact the basement membrane

•Allows diffusion or acts as a filter

•Secretion and absorption
•May include goblet cells to produce and secrete mucus

Simple Squamous Epithelium

Simple Cuboidal Epithelium

Simple Columnar Epithelium

Stratified Squamous Epithelium

Stratified Cuboidal Epithelium

Stratified Columnar Epithelium

Pseudostratified Columnar Epithelium

Transitional Epithelium