The mucous membrane of the stomach is characterized by the presence of rugae.

The liver contains endocrine ducts lined with epithelial tissue and the bile

duct lined by biliary epithelium.

The gustatory epithelium is involved in smell.

The conducting passageways of the respiratory

system are lined by pseudostratified

cuboidal epithelium.

Epithelium is classified as simple (squamous, cuboidal, columnar), pseudostratified columnar,

striated (squamous, cuboidal, columnar), and transitional.

Histology

deals with normal cells, tissues, and organs as seen

with a microscope while histopathology researches

diseased tissue.