How long human nerves are?

How many neurons (nerve cells) are in the brain? How big are they? There are approximately 100 billion (100,000,000,000) neurons in the human brain. To get an idea of how many 100 billion is, think of this: Assume that you were going to count all 100 billion cells at a rate of 1 cell per second. read more

Think about how long the axon of a motor neuron would be if you wanted to make a model of it. The cell body of a motor neuron is approximately 100 microns (0.1 millimeter) in diameter and as you now know, the axon is about 1 meter (1,000 millimeter) in length. So, the axon of a motor neuron is 10,000 times as long as the cell body is wide. read more

In the nervous system, information is carried in the form of electrical and chemical signals by highly complex cells called neurons. The human body contains some 100 billion neurons, which form a part of the nervous tissue (the brain, the spinal cord and the nerves). read more