How do you remember your way home from school?
Why do you breathe without thinking about it?
How do you know when you are hungry or thirsty?
Where do dreams come from?
The brain is a soft, grey, wrinkly organ inside your skull. It does all your learning and thinking and also controls all your muscles and senses.
The brain is connected to all parts of the body by nerves. Nerves send messages to and from the brain very quickly all the time. The brain and nerves work together to form the nervous system.
Different parts of the brain have different jobs.

What happens if your brain is damaged?

When the brain is damaged it is serious because the brain controls everything we do. Some body organs can repair themselves, others can't. The brain usually cannot repair itself.
Some things that affect the brain are germs that cause infections, growths on the brain called tumours, lack of oxygen and head injuries.