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Fun Facts About the Brain PDF Print E-mail
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- Contrary to popular belief, the brain CAN grow new cells

- There are more nerve cells in the human brain than there are stars in the Milky Way. 

- Average number of neurons in the human brain= 100 billion 

- Average number of neurons in an octopus brain= 300 billion 

- Longest axon of a neuron= around 15 feet (Giraffe primary afferent axon from toe to neck) 

- Velocity of a signal transmitted through a neuron= 1.2 to 250 miles/hour

- The adult human brain weighs about 3 pounds (1,300-1,400 g).

- The world record for time without sleep is 264 hours (11 days) by Randy Gardner in 1965

- Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
 

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