Provides an introduction to the human bones, including how many bones are in a body, why bones grow, and what happens when a bone breaks.

How is your body like a building? -- How many bones are there in your body? -- What's inside a bone? -- Why don't bones break when you jump? -- Can bones bend? -- Do our bones grow bigger? -- What happens if you break a bone? -- Can bones get sick? -- How do X-rays show your bones? -- Can bones be fat? -- How do bones stay strong? -- Are all skeletons the same? -- How does everything work together?.