Epithelial Tissue

Four Types of Tissue

Epithelial (protection)Connective (support)Muscle (movement)Nervous (control)

Epithelial Tissue

Covering & Lining Epithelium

Glandular Epithelium

Classified by:

Shape

Number of Layers

Apical-TOPBasement-BOTTOM

ArrangementSimple Stratified

http://www.science.ubc.ca/~biomania/tutorial/tuthisto/epdiag20.gif

Simple Squamous

Columnar

Simple Columnar

Pseudostratifiedcolumnar

Functions of Epithelium

ProtectionAbsorption SecretionSensory Functions

Features of Epithelium

Cell Junctions are TightBasement MembraneAvascular (no vessels)Highly Regenerative

Covering and Lining Epithelium

LocationCutaneous Membrane: Skin,

Keratinized stratified squamous, dry membrane

Serous Membrane: Closed ventral body cavities, Reduce friction,Moist