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What does lining of organs like mouth,blood vessels mean????

Answer 1

The mouth organ can be found all around the world and is known by many different names and seen in many different traditions. Non-piped organs include the reed organ or harmonium, which like the accordion and harmonica (or mouth organ) use air to excite free reeds. ... A musical instrument, sometimes called a mouth organ.

This is an essential function as blooddelivers valuable nutrients to and removes wastes from our cells. Blood vessels are constructed of layers of connective tissue and muscle. ... Blood vessel endothelium is continuous with the inner tissue lining of organs such as the brain, lungs, skin, and heart.

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Lining starts from here
Blood Vessels:-The largest blood vessels are arteries and veins, which have a thick, tough wall of connective tissue and and many layers of smooth muscle cells . The wall is lined by an exceedingly thin single sheet of endothelial cells, the endothelium, separated from the surrounding outer layers by a basal lamina.

Mouth:-The inside of the mouth is lined with mucous membranes. When healthy, the lining of the mouth (oral mucosa) is reddish pink. The gums (gingivae) are paler pink and fit snugly around the teeth. ... The tongue lies on the floor of the mouth and is used to taste and mix

Answer 2

Epithelium covers most organs and cavities within the body.The skin, the lining of the mouth, thelining of blood vessels, lung alveoli and kidney tubules are all made of epithelial tissue.
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