I’ve heard that a Cheetahs heart is like a nuclear power reactor compared to other mammals including humans. Can someone explain why or how?
In: Biology
A cheetahs heart isnt really constructed any differently, but it does have a larger heart for its body size than other cats. Thats what makes it a sprinters heart, made for sudden change to a larger ejection volume and keeping up with blood pressure changes as the running muscles and lungs call for blood volume and oxygen.
The structure is regular mammalian in shape and everything else.
You want to get into weirder physiology around running, look at American pronghorn. They have HUGE hearts, oversized tracheae, larger pulmonary vessels, extra blood volume, extra red blood cells in their spleen and liver, much more muscle mass per body mass than average for a mammal, and more active mitochondria in their muscle cells
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