The amazing brain can send signals to body parts at a speed of 200 miles (322 km) per hour! That comes in handy when someone is in danger or needs to move fast. Readers will appreciate the mysterious, fascinating organ in their skull known as the brain as they learn about the five main parts of the brain and their special functions. They'll also find out what they can do to keep their brain working well. Simple illustrations and bright photographs make this volume a fun and informative introduction to the nervous system.