Question

impure blood comes back to the heart....... through blood vessels​

Answer 1

Answer:

After the blood has supplied cells throughout the body with oxygen and nutrients, it returns deoxygenated blood to the right atrium of the heart. ... The heart then pumps it out of the right ventricle and into the pulmonary arteries to begin pulmonary circulation.

Answer 2

Answer:

impure blood comes back to the heart through veins

Explanation:

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