Ten Facts About Your brain …

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Facts:
1 • Your brain weighs about 3 pounds (1,300-1,400 g).

2 • Your brain has about 100,000,000,000 (100 billion) neurons.

3 • The total surface area of your cerebral cortex is about 2500 sq. cm

4 • Unconsciousness will occur after 8-10 seconds after loss of blood supply to your brain.

5 • Neurons multiply at a rate 250,000 neurons/minute during early pregnancy.

6 • You have 12 pairs of cranial nerves.

7 • You have 31 pairs of spinal nerves.

8 • There are about 13,500,000 neurons in your spinal cord.

9 • You can hear in the range of 20 Hz to 20,000 Hz.

10 • There are 1,000 to 10,000 synapses for your “typical” neuron.

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