The Amazing Human Body
- Your bones are 5 times as strong as steel!
- There are more nerve cells in your brain than stars in the Milky Way.
- Can you guess what the hardest working muscle in your body is?
Click on the different areas on Brendan Gallagher’s picture to check out cool videos and other fun facts about the 5 main systems of the human body!
Then take the quiz to see what you have learned and download your own “Body Systems Super Star” certificate!