FUN FACTS
ABOUT THE BRAIN

- 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.