If the brain is responsible for hormone distribution, neuronal movements and blood flow in the body, why can’t we control it?

Question

Thanks to our brain, we can control raising our right hand or opening and closing our eyes whenever we want.

Why can’t we control the blood pumped in our body or the division of our cells with the same brain?

In: Biology

Answer 1

Because there is no evolutionary advantage to controlling your blood flow manually. In fact it would probably be a disadvantage as you could damage your body easily.

Also, you’re born with all the neurons you’re going to have in your life. The only thing that changes is the connections that are created between them. This process manifests as ‘learning’.