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Capillaries are smallest in diameter blood vessels, connect to the smallest arterioles and the smallest venules. Capillaries are extentions of the inner linings of arterioles in that their walls are endothelium. These thin walls form the semipermeble layer through which substances are exchanged between the blood and the tissue fluid surrounding body cells.

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13y ago
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9y ago

A capillary connects arteries and veins. it is the site of diffusion of materials from cells to and from the bloodstream.

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Q: Describe The structure and function of a capillary?
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