Sculpted from a medical model of a real body, the detailed, realistic human body model is composed of 10 removable squishy organs and 15 other removable bones, muscles, and organs. The mandible on the skull opens and closes, a transparent lung displays the inner workings of the respiratory system, and joints bend and rotate. When one of the eight removable SmartParts is placed on the electronic SmartScan module, the scanner recognizes the part and prompts you to select Scan Mode or Quiz Mode. In Scan Mode, you’ll hear information about the part, the system it belongs to, and fun facts. In Quiz Mode, you’ll test your knowledge by placing the correct SmartPart on the scanner to answer 70 quiz questions. The module also produces sounds based on the organ in question, so expect to hear some burps and gurgles!Includes: 16"" (40.6 cm) tall Human Body model, 25 removable body parts, including 10 squishy organs & 8 SmartParts, scanner base with SmartScan Technology, removable stand, organ-izer chart, quick-start guide, assembly sheet, and a 48-Page Illustrated Anatomy book. Although the book is written for slightly older children, this best-selling anatomy toy is appropriate for children ages 5 and up. Requires three 1.5V AAA (LR03) batteries (not included).