Volunteer writes:
...how would the heart, which requires the brain to tell it to beat, function during its intermediary stages while the brain was evolving? When did the
heart, which is a whole system by itself, decide to evolve and become a complex circulatory system?...
Why do you suppose a brain-dead individual still has a heart beat? (No, that's not a veiled insult of creationist, I mean in the clinical sense.)
The human heart does not require the brain to tell it to beat. The heart has 3 systems to regulate the heart each with its own intrinsic rate.
Sinoatrial node (SA node)
Atrioventricular node (AV node)
And third the Purkinje fibers
Next, the heart is an
organ not a system, it is part of the circulatory system. Have you taken even an intro bio course yet?
The heart doesn't require the brain for any stages of evolution. I know you think these arguments are clever, but they are simply demonstrating to the rest of us how little you know.
-x
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