Like, how do they know they need lungs for oxygen? How do they know to send waste to our kidneys? How do they know to always keep the heart beating?
In: Biology
The brain doesn’t control a lot, maybe most, of the organs. The heart beats on its own even without a brain. The liver filters blood on its own, even without a brain. Your stomach digests food on its own, even without a brain. And so on and so on. Each organ is a fine tuned machine that does “one job” and it doesn’t know or care about the other organs. All it knows is it takes an input and produces an output.
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