In simple squamous epithelia all the cells are in contact with the basal lamina (basement membrane) of the epithelium. Examples are found in capillaries, alveoli, glomeruli, and other tissues where rapid diffusion is required.
 Types of epithelium |
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"...found in serous membranes, in the lining of blood vessels and the heart, and in air sacs of the lungs. Squamous epithelial cells are irregularly shaped, flat, and scale-like. These cells, depending on how they are organized, function either in protection or in secretion and diffusion." Simple squamous epithelial cells are found in mesothelia lining ventral body cavities, portions of the kidney tubules(thin sections of loops of Henle) inner lining of cornea, and the alveoli of the lungs. Functions serve in reducing friction, controlling vessel permeability, as well as preforming absorption and secretion. Source: Laboratory manual for Anatomy & Physiology third edition, By Michael G. Wood 2005
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