what type of vessels is it speaking about when blood travels back to the heart where dose it enter ?
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Answer: The vessel they are talking about is Arteries.
Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide. These roadways travel in one direction only, to keep things going where they should.
Explanation: I hope this will help you
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