Epithelial Tissues

Chapter 4

Simple squamous epithelium - location and function?

Blood vessels, filtration

Simple cuboidal epithelium - location and function?

Kidney tubules, secretion

Ciliated simple columnar epithelium - location and function?

Uterine tube, secretion of mucin

Non-ciliated simple columnar epithelium - location and function?

Digestive tract, absorption

Pseudostratified columnar epithelium - location and function?

Respiratory tract, protection

Keratinized stratified squamous epithelium - location and function?

Epidermis, protection of underlying tissue

Non-keratinized stratified squamous epithelium - location and function?

Vagina, protection of underlying tissue

Stratified cuboidal epithelium - location and function?

Duct of sweat glands, secretion

Stratified columnar epithelium - location and function?

Male urethra, protection

Transitional epithelium - location and function?

Urinary bladder, stretches and relaxes to accommodate urine volume change

Found near the apical membrane & is used to unite the cells that are next to each other; it prevents material from passing down the side of the cell & getting into the body without going through the cell itself

Tight junction

Used to make sure the apical membrane is convex & not concave; it is located near the apical membrane, just basal to the tight membrane

Adherens

Found in areas of high stress; uses a system of plaques & fibers to bind the adjacent cells together so that the stresses will not pull apart

Desmosome

Used to supply a direct route from one cell to another; this accommodates rapid passage of mostly ions & sending messages from cell to cell

Gap junction