Way back when--in the time of the dinosaurs, or rather, in the time before computers, kids in high school biology used to do actual dissections in biology labs.
Nowadays, all that hands-on stuff can be done virtually. If you grew up during the pre-computer days, then perhaps you'd be interesting in seeing how dissections are done virtually. There's a site I came across, Anatomy Corner, that enables you to relive your high school bio days.
It is also good for kids doing projects that require knowing about the human body. There's a Powerpoint presentation on an "Introduction to Anatomy and Physiology," if you slept during high school biology class, and illustrations galore!
We still have the good old-fashioned Gray's Anatomy: The Anatomical Basis of Medicine and Surgery [R 611 GRA] for your nonvirtual anatomy study needs in our reference section or the Atlas of Anatomy [611 ATL], which may be borrowed. And for elementary school-age kids there's The Body Atlas by Steve Parker [J 611 PAR].