Zygote Body is a free online resource. You can view and interact with a 3D body, both female and male, and switch between muscular, skeletal and neurological views. Looks great on an IWB. If you have an iPad you may like to download Essential Skeleton (resource source Richard Byrne) , Virtual Heart or my favourite POMT-bone. My year 3 students liked the virtual heart and hand app, but you will need to view the other apps or the online resources before sharing with your class as they show ALL body parts.