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20-02-2020
Biology

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Which of the following is true about veins? 1. Veins have valves; arteries do not. 2. Veins carry blood away from the heart, while arteries carry blood to the heart.3. Veins are more muscular than arteries.4. Veins have a smaller diameter lumen than arteries.

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03-03-2020

Answer:

#1 is true

Explanation:

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