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The main role that the heart plays during physical activity is to increase its rate during activity, so that the muscles are more rapidly supplied with oxygen, and so that the waste products are more rapidly carried to the kidneys and liver for processing.

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14y ago
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6mo ago

The heart does not eliminate wastes itself. Waste elimination is primarily performed by the kidneys, which filter waste products out of the blood and excrete them in the form of urine. The heart's main function is to pump oxygen-rich blood to the body and oxygen-depleted blood to the lungs.

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Q: How does your heart eliminate wastes?
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The heart beats faster in order to eliminate extra waste. This usually occurs while active, like exercise for example. Notice how you have an increased heart-rate? That's because the muscles (such as your heart) need to work overtime to pump blood that carry nutrients to the heart, and the waste away from the heart. This process needs to occur more rapidly when active, thus the heart works faster.


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