Based On The Number of Layers:: Simple Squamous
Based On The Number of Layers:: Simple Squamous
Based On The Number of Layers:: Simple Squamous
3. 2 types of epithelial tissue are based on the number of layers and based on the shape.
based on the number of layers:
- simple
- stratified
- pseudo stratified
- transitional
based on shape:
- squamous
- cuboidal
- columnar
Simple Squamous
Simple squamous epithelium cells are flat in shape and arranged in a single layer. This single
layer is thin enough to form a membrane that compounds can move through via passive
diffusion. This epithelial type is found in the walls of capillaries, linings of the pericardium, and
the linings of the alveoli of the lungs. Simple squamous Location: blood and lymphatic vessels,
air sacs of lungs, lining of the heart Function: secrets lubricating substance, allows diffusion and
filtration
Simple Cuboidal
Simple cuboidal epithelium consists of a single layer cells that are as tall as they are wide. The
important functions of the simple cuboidal epithelium are secretion and absorption. This
epithelial type is found in the small collecting ducts of the kidneys, pancreas, and salivary
glands. Simple columnar epithelium is a single row of tall, closely packed cells, aligned in a row.
These cells are found in areas with high secretory function (such as the wall of the stomach), or
absorptive areas (as in small intestine ). They possess cellular extensions (e.g., microvilli in the
small intestine, or the cilia found almost exclusively in the female reproductive tract).
Simple Columnar
Simple columnar epithelium is a single row of tall, closely packed cells, aligned in a row. These
cells are found in areas with high secretory function (such as the wall of the stomach), or
absorptive areas (as in small intestine ). They possess cellular extensions (e.g., microvilli in the
small intestine, or the cilia found almost exclusively in the female reproductive tract). Simple
cuboidal Tissue Location: secretory ducts of small glands, kidney tubules Function: allows
secretion and absorbtion