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Question

The largest and thickest blood vessels are

A
Arteries
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B
Veins
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C
Capillaries
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D
Venules
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Solution

The correct option is A Arteries
The arteries are the thickest of all blood vessels and have muscular walls that contract to keep the blood moving away from the heart. The veins are not as muscular, but they contain valves to prevent the blood from flowing backward. The arteries are therefore widest blood vessels.

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