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Originally Posted by captain swoop
WHy doesn't a Giraffe die?
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Oh, Pastor Johnson deals with that in
William's
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The length (and, more importantly, the vertical range) of a giraffe's neck appears to be close to the limit of what's physiologically possible, given the heart structure and operation known in any animals.
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See, the giraffe manages fine, but there are no taller animals around at present, so it's clearly physiologically impossible for taller animals to cope cardiovascularly. Therefore, the taller animals in the fossil record obviously couldn't cope cardiovascularly. That's the argument, stripped of exclamation marks and capital letters, unfounded claims about cardiac muscles, and a little confusion about how heart valves work.
Grant Hutchison