MICROANATOMY

Detailed explanation-1: -In the respiratory system, the Simple Squamous epithelial cells are found in the lungs and are a part of the circulatory system by the lining they render to the capillaries. Their presence in the alveolar epithelium enables simple passive diffusion.

Detailed explanation-2: -Simple squamous epithelium also makes up the alveoli in the lungs (Figure 3), where rapid gas exchange occurs, as oxygen enters the bloodstream through alveolar blood vessels and carbon dioxide exits as waste.

Detailed explanation-3: -Simple squamous epithelium lining the alveoli in the lungs allows the gas exchange between the alveoli and the blood vessels while also forming a barrier between the outside and the internal body fluids.

Detailed explanation-4: -Simple squamous epithelial cells in the alveoli are a part of the respiratory membrane, and are the thinnest cells in the body. The alveolar epithelial cells are also called pneumocytes type I, in contrast to pneumocytes type II, other alveolar cells that produce and secrete surfactant.