The circulatory system transports substances all over the body. It is made up of tubes called __________.
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1
Answer:
blood vessels (veins and nerves)
Explanation:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. 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.
Answered by
1
Answer:
Arteries and Veins, collectively called Blood vessels
Explanation:
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