[MUSIC] Joan Cartan-Hansen, Host: Let's, uh hem, bone up on some facts about the skeletal system.

The adult human body has 206 bones.

But infants have almost a hundred more bones.

Over time, these extra bones fuse together.

Of your bones, more than half, 106, are in your hands and feet.

The longest bone in the human body is the femur, which runs from your hip to your knee.

The smallest is the stapes.

The stapes, the anvil and the hammer bones in your middle ear are what transfer sound waves to your brain.

The biggest joint is in your knee.

That's because it connect three large bones, the femur, the tibia and the patella.

You can keep your bones strong and healthy by exercising and eating calcium-rich foods like dairy products and broccoli.

Treated right, your skeletal system will support you lifelong.

For more information about skeletons and the skeletal system, check out the science trek website.

You'll find it at science trek dot org