How many bones are in your body? Which bone protects your brain? What are bones made of? Find the answers to these questions and much, much more in this comprehensive introduction to the human body. Packed with photographs and diagrams, fascinating facts and activities to complete, this is a hands-on guide to how the human body works. Written and checked by experts, it uses clear and simple explanations making complex ideas easy to understand, and features a glossary to explain tricky term,s as well as parents' and teachers' notes to help take the learning further.