| how your heart works |
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What color is blood? Well, how your heart works explains that it can be a bluish color or bright red. They explain that when the blood is oxygenated, it is bright red and that is why it is always red when we see it because it is exposed to air. When you understand how your heart works, you know that the heart coordinates with the lungs through the pulmonary artery and veins to get oxygenated blood to living cells in the body. For more info on how your heart works click here! |