When it comes to your body, your brain
runs the show. It tells you what to do and makes sure all your systems are go so you
can breathe, move around,
and use your senses.
But your brain needs to send messages or signals to the other parts of your body
to make these things happen. That's where nerves come in. Your nerves are like a bunch
of wires or cables that send signals to and from the brain. The brain uses nerves
to communicate with everything from your heart to your toes.