Brain Bits: Facts You Have Missed

1. A human brain comprises only 2% of the body, yet it uses 20% of the oxygen and blood.
2. The longest living cells in the body are brain cells, which can last a lifetime.
3. The largest brain of a living creature, belongs to the sperm whale, whose intellectual center weighs a whopping 9kg. Or about 19.8lbs. The stegosaurus dinosaur, which could reach lengths of 30', had a brain the size of a walnut.
4. A dolphin's brain is structured so that only half sleeps at a time, allowing the alert half to maintain its breathing, and keep it surfacing for air.
5. Albert Einstein's brain weighed only 1230 grams as opposed to the average for adult males, of 1400 grams.
6. The heaviest human brain ever recorded, was 5 lbs. 1.1 oz.