Your brain is made up of cells. Specialized cells called neurons allow you to think, feel, and move. Neurons aren't only found in the brain. These tiny excitable cells form a network throughout your body. They send messages from your body to your brain, all around your brain, and from your brain out to the muscles. Neurons connect through long, spidery branches, carrying signals that control all your thoughts and behaviors.

Image credits: main image, © Richard Tibbitts/Antbits.