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Published byNeal Lloyd Modified over 9 years ago
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Tunica interna (intima) Inner layer of arteries and veins Endothelium made of simple squamous epithelial cells
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Tunica media Consists of smooth muscle
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Tunica externa (adventitia) Made of connective tissue
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Artery
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Arteriole Small blood vessel coming off a larger artery
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Capillary Filled with red blood cells Smallest of the body’s blood vessels
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Venule Small blood vessel feeding into a larger vein
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Arteriole and Venule Compared Arteriole Venule
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Vein
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One-way valve
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Oxygenated blood (red vessels)
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Deoxygenated blood (blue vessels)
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