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RideAnS [48]
2 years ago
14

_______________________________ are the smallest, thinnest vessels in a closed circulatory system and are the site of the exchan

ge of oxygen and carbon dioxide
A: Arteries
B: Capillaries
C: Veins
Biology
1 answer:
Greeley [361]2 years ago
5 0
Capillaries: <span>any of the fine branching blood vessels that form a network between the arterioles and venules.</span>
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