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Human Brain

  1. Jul 17, 2010 #1
    Hi everyone,

    I am actually very new to biology and unable to understand some of the things.

    My question is that, if our heart is working because of the blood it pumps, I mean that our heart needs blood for pumping all the time and if it dont get the blood then it may stop working !!

    So, how the brain is working ? !

    I first related its working to blood and oxygen, but then I realized that there might be something different about our brain.

    Any ideas ? !
  2. jcsd
  3. Jul 17, 2010 #2

    jim mcnamara

    User Avatar

    Staff: Mentor

    All the cells in all human tissues do work the same way - they require oxygen and glucose
    to respire - to release energy to do work.

    Organs all have a blood supply. Blood provides glucose + oxygen and removes the end products of respiration like carbon dioxide. This allows cells to do their job. Your heart and brain have a blood supply.

    Beyond that, I don't get what you are trying to ask. The brain has a blood supply. If it is interrupted you go unconscious very quickly. Except under very rare circumstances, if the blood supply is cut off for more than a few minutes the brain dies.
  4. Jul 17, 2010 #3
    I got you !!

    Glucose was the thing missing from my mind, I actually thought that brain might be working from blood and oxygen only, but where I was missing was to find about its energy provider, so glucose was it !!
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