Why the heart doesn’t get tired from being active 24/7 but other muscles do?
In: Biology
Heart muscles are almost entirely composed of contracting fibers and mitochondria so they can work tirelessly.
They do this by sacrificing storage space, they store no energy reserves and must be supplied with huge volumes of oxygenated blood continuously. That would be a problem way down in your toes, but it’s no trouble in your heart – unless something blocks the flow.
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