Tag Archives: brain

Brain Trivia: Written about 1,700 B.C., the Edwin Smith surgical papyrus contains the first recorded use of the word “brain.”

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Brain Trivia: From childhood until puberty, synapses in the human neocortex are lost at a rate of 100,000 synapses per second

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Brain Trivia: There are about 3 million miles of axons in the human brain

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Brain Trivia: There are about 1,200,000 nerve fibers in each human optic nerve.

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Brain Trivia: The human cerebral cortex has an area of about 2.5 square feet and has over 25 billion neurons.

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Brain Trivia: The distance separating two neurons at a synapse is 20-40 nanometers. (1 nanometer = one-billionth of a meter.)

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Brain Trivia: Some of the oldest cells in the human body are neurons…they last a lifetime.

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Brain Trivia: 400 to 500 ml (13-17 oz) of cerebrospinal fluid is produced each day

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Brain Trivia: The heaviest human brain ever recorded weighed 5 lb., 1.1 oz or about 2.3 kg

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Brain Trivia: Information travels in the nerves at speeds up to 268 miles per hour (429 kilometers/hour)

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