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What 'the neuron

(Neuroscience for Kids is at http://faculty.washington.edu/chudler/what.html )

What is a neuron?

The neuron is a nerve cell. The
brain is made of about 100 billion neurons.

neurons are similar to other cells of the body as
:

1. are surrounded by a membrane.
   
2. They have a nucleus that contains genes.
   
3. contain cytoplasm, mitochondria and other "organelles".
   

neurons, however, differ from other cells of the body, because
:

1. have specialized extensions called dendrites and axons. Dendrites bring
   informations to the cell body, whereas axons from the lead
   cell body to other cells.
   
2. Neurons communicate with each other through
   electrochemical processes.
   
3. neurons form specialized contacts called synapses molecules and produce special chemicals called neurotransmitters
   
   that are released from the synapse.