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 picture-packed introduction to the human body. Covering the key body systems, this series provides an essential introduction to how the human body works. Packed with photographs, artwork and clear, concise text, these titles make complex ideas easy to understand. This title features: labelled diagrams of key body parts; activities to aid understanding; fascinating facts, written and checked by experts; and, clear, modern design.