MICROANATOMY

Detailed explanation-1: -Squamous epithelium is made of a thin layer of flattened cells with irregular boundaries. The nucleus is found in the upper surface of cell membrane giving an embossed look. It is abundantly present in the blood vessels, alveoli of lungs, intestine etc.

Detailed explanation-2: -Simple squamous epithelial cells are flat and thin enough to allow molecules to pass via diffusion. This cell type is found in the walls of capillaries, linings of the pericardium, and alveoli.

Detailed explanation-3: -Simple squamous epithelial cells form a membrane that allows selective diffusion of materials to pass through. Diffusion helps with filtration, absorption and secretion functions.

Detailed explanation-4: -The lungs are made of pseudostratified ciliated columnar epithelium.