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    3. The human brain takes up to 2% of human body weight but uses 20% of it's energy. True or False.
    The human brain takes up to 2% of human body weight but uses 20% of it's energy. True or False.

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    0  Views: 369 Answers: 1 Posted: 13 years ago
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      1 Answer

      VERY TRUE:


      In the average adult human, the brain represents approximately 2% of the total body weight but approximately 20% of the energy consumed (Clark & Sokoloff 1999), 10 times that predicted by its weight alone. Relative to this high rate of ongoing or “basal” metabolism (usually measured while resting quietly awake with eyes closed), the amount dedicated to task-evoked regional imaging signals is remarkably small.


      http://ask.metafilter.com/53568/Why-does-the-brain-use-up-so-much-energy

      11 years ago. Rating: 6
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