Tissues

Simple squamous in tubular arrangement.

Simple cuboidal

Simple cuboidal arranged as a duct

Simple columnar.

Pseudostratified columnar with cilia

Transitional.

Tissue

Stratified squamous.

Simple Epithelium

1 layer of cells

Stratified Epithelium

Many layers of cells

Simple Squamous

Structure: 1 layer of flat, tile-like cells

Function: Diffusion and filtration

Location: blood vessels, lungs, heart, kidneys

Simple Cuboidal

Structure: 1 layer of square-shaped cells

Function: secretion

Location: glands, ovaries, kidneys

Simple Columnar

Structure: 1 layer of tall, narrow cells

Function: secrete mucus and absorption

Location: stomach, intestines, respiratory tract

Pseudostratified Columnar

Structure: 1 layer of tall, narrow cells appears stratified but isn’t

Function: secrete mucus and propel debris out of the resp. Tract (cilia).

Location: nasal cavity and trachea

Stratified Squamous

Structure: many layers of flat, tile-like cells

Function: protect & acts as a barrier

location: skin, mouth, throat, esophagus

Transitional

Structure: Special type of stratified epi. Changes shape (stretched squamous, not stretched cuboidal)

Function: hold fluids

Location: urinary bladder