NEET BIOLOGY

Detailed explanation-1: -The lining of the mouth, lung alveoli and kidney tubules are all made of epithelial tissue.

Detailed explanation-2: -The epithelium is a type of body tissue that forms the covering on all internal and external surfaces of your body, lines body cavities and hollow organs and is the major tissue in glands.

Detailed explanation-3: -A single layer of thin, flattened epithelial cells lines the interior of blood vessels. They provide a slick surface that promotes a smooth flow of blood cells through the vessel. These lining cells can be surrounded by smooth muscle cells, which form a thick, contractile wall for a blood vessel.

Detailed explanation-4: -Renal tubular epithelial cells line the outside of renal tubules in the kidneys. The renal tubules are responsible for returning fluids and nutrients to the blood. The remaining fluid in the renal tubules turns into urine.