Fun Facts


 Since we’ve been talking about the nervous system…
– There are more nerve cells in the human brain than there are stars in the Milky Way.
– If we lined up all the neurons in our body it would be around 600 miles long.
– There are 100 billion neurons in your brain alone.
– A newborn baby’s brain grows almost 3 times during the course of its first year.
– The left side of human brain controls the right side of the body and the right side of the brain controls the left side of the body.
– A new born baby loses about half of their nerve cells before they are born.
– As we get older, the brain loses almost one gram per year.
– There are about 13, 500,00 neurons in the human spinal cord.
– The total surface area of the human brain is about 25, 000 square cm.
– The base of the spinal cord has a cluster of nerves, which are most sensitive.
– An average adult male brain weighs about 1375 grams.
– An average adult female brain is about 1275 grams.
– Only four percent of the brain’s cells work while the remaining cells are kept in reserve.
– Neurons do not under go mitosis
– Neurons are the largest cells in the human body. (They can be up to 3 feet long)
– The Nervous System can transmit impulses as fast as 100 meters per second.
– Potassium and sodium ions are vital to the proper functioning of the Nervous System.

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