The nervous system has about 86 billion neurons (nerve cells). 86 billion!
That's 86,000,000,000!!! Neurons come in many shapes and
sizes. In the picture below, there are 8 neurons. Can you tell which two
are exactly the same?
The 2 identical neurons are: [Click here for the
Neurons "A" and "G" are the
same. Did you get it right?
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