Your brain has about 100 billion neurons, all of which are interneurons.
Each of these neurons may receive up to 10,000 messages from other
neurons and may send messages to about 1,000 more. Every day, billions
of nerve impulses travel through your nervous system from neuron to
other neurons or body structures. The place where a neuron transfers an
impulse to another structure is called a synapse. At the axon tips,
electrical signals carried through the neuron change into a chemical
form. This change allows the message to cross the gap. The message then
continues in electrical from through the next neuron.
