How many neurons are there in the brain?

Answer by  nursepractitionerlisa (793)

That is an impossible number to count. There is so much not known about the brain. It is easy to say there are billions and billions. They are one of the smallest structures in the body.

Answer by  missyl79 (87)

There are around 100 billion neurons in the brain that send electrochemical signals from the brain to the nervous system.