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The path of a red blood cell through
1. The path of a red blood cell through the body to the heartBy Lucy Hammon
2. The path of a red blood cell starts in the heart. The left ventricle contracts, pushing red blood cells into the aorta.
3. Then blood moves through a series of small arteries, until it reaches a capillary.
4. Here oxygen molecules detach from the red blood cells and slip across the capillary wall into body tissue.
5. Now de-oxygenated blood returns to the heart. It passes through veins to eventually reach the right atrium.
6. It enters the right ventricle, which pumps it through the pulmonary arteries into the lungs, to pick up more oxygen. Oxygenated, blood reenters the left atrium, moves into the left ventricle
