After matching the following: 1. the left atrium; 2. oxygen; 3. vena cava; 4. the right atrium; 5. the right ventricle; 6. the lungs and 7. the aorta
1. Blood enters the left atrium of the heart after releasing carbon dioxide from the body.
2. Blood removes carbon dioxide and picks up oxygen.
3. Vena cava convey oxygen- and waste-poor blood into the heart.
4. Blood that is low in oxygen and carrying waste enters the right atrium of the heart.
5. The right ventricle is the heart's lower-right chamber.
6. The lungs are the final stop for blood traveling through the pulmonary arteries.
7. The aorta pumps oxygen-rich blood into the body's blood arteries.
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