Extra body parts can occur more often than people might think. Doctors call the extra appendages "supernumerary" body parts and these can be found on some famous people in history.
WHAT'S INSIDE: HUMAN BODY
- Body Parts
- Body Systems
Every day in the United States, an average of 18 people die while awaiting organ transplants because of a critical shortage of donors. Get facts about organ donation here.
Everything we do is controlled and enabled by electrical signals running through our bodies. But how are those signals produced, and what happens when your electrical system breaks down?