Type

Simple Squamous
Epithelia
Simple Cuboidal
Epithelium

Classifications of Epithelia
Structure
Function
Single layer of flat cells,  Diffusion
often hexagonal cells
 Filtration
The nuclei appear as bumps
when viewed in cross section  Some secretion
because the cells are so flat
 Some
protection
against friction

Single layer of cube-shaped 
cells

Some cells have microvilli
(kidney tubules) or cilia 
(terminal bronchioles of the
lungs)


Location
Lining of blood vessels

Alveoli of the lungs

Portions
tubules

Lining of serous membranes
of body cavities (pleural,
pericardial, peritoneal)
Kidney tubules, glands, and
their ducts
Choroid plexuses of the
brain
Lining
of
terminal
bronchioles of the lungs
Surfaces of the ovary
Secretion
and 
absorption by cells of
the kidney tubules

Secretion by cells of
glands and choroid 
plexuses

Movement
of
particles embedded in
mucus out of the
terminal bronchioles
by ciliated cells
of
the
kidney