Amazing Facts About Brain
* Weight. The weight of the human brain is about 3 lbs.
* Cerebrum. The cerebrum is the largest part of the brain and makes up 85% of the brain's weight.
* Skin. Your skin weighs twice as much as your brain.
* Gray matter. The brain's gray matter is made up of neurons, which gather and transmit signals.
* White matter. The white matter is made up of dendrites and axons, which create the network by which neurons send their signals.
* Gray and white. Your brain is 60% white matter and 40% gray matter.
* Water. The brain is made up of about 75% water.
* Neurons. Your brain consists of about 100 billion neurons.
* Synapses. There are anywhere from 1,000 to 10,000 synapses for each neuron.
* No pain. There are no pain receptors in the brain, so the brain can feel no pain.
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