Histology - Lecutre 5

Types of epithelial tissues (5)

• Simple

• Stratified

• Cuboidal

• Columnar

• Transitional

Types of apical structures (2)

• Cilia

• Microvilli

Types of lateral structures (5)

• Tight Junctions (ZO)

• Adherens Junctions (ZA)

• Desmosomes

• Hemidesmosomes

• Focal Adhesion

Is epithelium an vascular tissue?

no

Functions of epithelium cells (3)

• cover exterior body surfaces

• internal closed cavities

• Body tubes that communicate with the exterior

Characteristics of simple squamous (layer,shape, function,location)

• Single

• Flat

• Diffusion and filtration

• Alveoli, endothelium

Characteristics of stratified squamous (layer,shape, function,location)

• Multiple layer

• Flat

• Protection against pathogen, chemical attack

• Skin, oral cavity, esophagus, vagina

Characteristics of simple cuboidal (layer,shape, function,location)

• Single layer

• Cube-shaped

• Absorption and secretion hormones

• kidney tubules, small glands (duct)

Characteristics of stratified cuboidal (layer,shape, function,location)

• Multiple Layer

• Cube-shaped

• Protection and limited secretion

• Large duct of sweat glands, mammary glands

Characteristics of simple columnar (layer,shape, function,location)

• Single Layer

• Column-shaped with nuclei near the basal surface

• Absorption, secretion, protection

• Digestive, respiratory, and reproductive tracts

Characteristics of Pseudostratified columnar (layer,shape, function,location)

• Single Layer but appeared stratified with

• Has cilia and goblet cells

• secretion and propulsion of mucus

• Respiratory, male reproductive tract