2 Answers

  1. If the heart stops, then in the very near future the brain will begin to experience an acute lack of oxygen and glucose, since it will not receive blood. The same applies to all other organs and tissues. Everything will start to “go out”, “die”.. It's only a matter of a few minutes.

    Now about the brain. I will include both brain and spinal cord in the word brain, although this may not be entirely correct. But the bottom line is that all reflexes, all impulses come from it (both to the heart and to any other part of the body). Commands are sent from the brain,with what frequency and strength to beat the heart. And also from the brain there are commands with what activity the organs work(we are talking about the autonomic nervous system,that is, the unconscious). But. The heart has an automaton, pacemaker cells that can generate impulses that give heartbeats without external impulses. Therefore, when the brain is “turned off”, the heart will be able to knock autonomously for some time,but again not for long, its autonomous impulses will last for several minutes.

    Thus, when both the heart and brain “stop” working, a countdown of a couple of minutes will start. Answer: the brain and heart are equally important)) without one, the other can't work.

  2. I absolutely agree with the first speaker.
    However, there is another point: the heart can be transplanted or replaced with an artificial one. The brain, at least not yet. And, to be honest, I don't believe that it will ever be possible. The brain is our memory, our personality, our “I”.

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