100 Fascinating Facts You Never Knew About the Human Brain

Interesting Facts:

The human brain has amazed and baffled people throughout the ages. Some scientists and researchers have devoted their entire lives to learning how the brain works. It is no wonder that people enjoy learning facts about this incredible organ in the human body. Below, you will find 100 facts about the brain including how it works, how it develops, what it controls, how it affects sleep, dreams, and memory, and more, which may be helpful in your quest to earning a CNA. When you finish reading about these fun facts, take this short brainpower quiz and see how much you learned about the human brain.

Physical Attributes

These facts will teach you interesting bits of information about the physical make-up of the human brain.

1. Weight. The weight of the human brain is about 3 lbs.
2. Cerebrum. The cerebrum is the largest part of the brain and makes up 85% of the brain’s weight.
3. Skin. Your skin weighs twice as much as your brain.
4. Gray matter. The brain’s gray matter is made up of neurons, which gather and transmit signals.
5. White matter. The white matter is made up of dendrites and axons, which create the network by which neurons send their signals.
6. Gray and white. Your brain is 60% white matter and 40% gray matter.
7. Water. The brain is made up of about 75% water.
8. Neurons. Your brain consists of about 100 billion neurons.
9. Synapses. There are anywhere from 1,000 to 10,000 synapses for each neuron.
10. No pain. There are no pain receptors in the brain, so the brain can feel no pain.
11. Largest brain. While an elephant’s brain is physically larger than a human brain, the human brain is 2% of total body weight (compared to 0.15% of an elephant’s brain), meaning humans have the largest brain to body size.
12. Blood vessels. There are 100,000 miles of blood vessels in the brain.
13. Fat. The human brain is the fattest organ in the body and may consists of at least 60% fat.

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