A basic essay discussing how the brain sends messages throughout the body, how chemicals affect the brain, and explains the left and right brain.

How it works-<Tab/> The human brain has 1,000,000,000,000 nerve cells (neurons) that process information. Neurons receive information from other cells through networks called dendrites. Then the neurons send the information in electrical impulses to other nerves. Then the message is passed on to other cells at points of contact called synapses. This causes the release of chemical neurotransmitter. Neurotransmitters are molecules that are used to communicate messages from a transmitting nerve …

…Right and Left sides of the brain do not only control different behaviors but also different functions. In people the left side of the brain is dominate for language. Most people with speech impediments have damage to the left side of the brain. In the Wada Test a fast acting anesthetic (sodium amytal) is injected into the left brain. Thus the left brain is put to sleep temporarily. When asked to speak, most people couldn't.