2. arteries that feed the brain long as 100,000 miles in a little brain no bigger than a cantaloupe that was packed with an incredible thing. If varicose veins inside the brain handles stretched out together. You can measure the length of more than 100,000 miles of nerve fibers It also contains more than one billion units, I can not believe that I was in before the brain is packed with a mass equivalent to just 2% of the body.
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