GENERAL HISTOLOGY

Detailed explanation-1: -Simple epithelium is a single layer of cells with every cell in direct contact with the basement membrane. It can serve many functions, including absorption, filtration and protection. The thinness of the epithelial barrier facilitates easy movement of molecules across into another compartment.

Detailed explanation-2: -simple squamous epithelium is a single layer of flat scale-shaped cells. Both the endothelial lining of blood vessels and the mesothelial lining of the body cavities are simple squamous epithelium.

Detailed explanation-3: -Simple columnar epithelium consists of a single layer of tall (columnar) cells. Simple columnar epithelium is usually involved in active secretion and/or absorption of material across the single cell layer, or (if ciliated) in movement along the surface.

Detailed explanation-4: -Epithelial cells can also be organized into one or multiple layers. There are two types of epithelial tissues with only one layer of cells: simple and pseudostratified. Simple epithelial tissues have one layer of cells in a single line; an example of this tissue type is simple cuboidal epithelium.