04 - ET Review

The two types of layering recognized in ET are:

• cuboidal and columnar

• squamous and cuboidal

• columnar and stratified

• simple and stratified

A single layer of epithelium covering a basement membrane is termed:

• simple

• stratified

• squamous

• cuboidal

simple epithelial cells are characteristic of regions where:

• mechanical or chemical stresses occur

• support and flexibility are necessary

• padding and elasticity are necessary

• secretion and absorption occur

from a surface view, cells that look like fried eggs laid side by side are:

• squamous

• simple

• cuboidal

• columnar

stratified epithelium has several cell layers above the basement membrane and is usually found in areas where:

• secretion and absorption occur

• mechanical or chemical stresses occur

• padding and elasticity are necessary

• storage and secretion occur

cells that form a neat row with nuclei near the center of each cell and appear square in typical sectional views are:

• stratified

• simple squamous

• simple cuboidal

• simple columnar

The major difference between columnar and cuboidal tissue is that columnar:

• are hexagonal and the nuclei are near the center of each cell

• consist of several layers of cells above the basement membrane

• are thin and flat and occupy the thickest portion of the membrane

• are taller and more slender and the nuclei are crowded into a narrow band close to the basement membrane.

simple squamous epithelium would be found in the following areas of the body:

• kidney glomeruli

• air sacs of the lungs

• walls of capillaries

• all are correct

glandular epithelia contain cells that produce:

• exocrine secretions only

• exocrine and endocrine secretions

• endocrine secretions only

• secretions from simple squamous epithelia only

The mucous membranes that are lined by simple epithelia perform the functions of:

• Digestion and circulation

• respiration and excretion

• absorption and secretion

• all are functions