WARM UP “Do not protect yourself by a fence, but rather by your friends.” –Czechoslovakian proverb What does this mean to you? How can you apply this biology / anatomy? How can you apply this to “the real world?”

Epithelial Tissue

General Characteristics Next to free surface Tightly packed Simple (one layer) or stratified (many layers)

Types of Epithelial Tissue Simple squamous Thin, flattened Rapid diffusion Kidneys

Types of Epithelial Tissue Stratified squamos Many layers allow quick replacement Skin

Types of Epithelial Tissue Transitional When relaxed, many layers of square/round cells When distended (stretched), looks like stratified squamous Bladder

Types of Epithelial Tissue Simple cuboidal Secretion/ absorption Glands, kidneys

Types of Epithelial Tissue Glandular Secretion Cuboidal and goblet cells

WRAP UP Where do you find cuboidal epithelial tissue? What does it do? Compare and contrast endocrine and exocrine glands.

WARM UP Give one general characteristic of all epithelial tissue. Compare and contrast transitional and stratified squamos epithelium.

WRAP UP Compare and contrast simple squamous and stratified squamous epithelial tissue.