Bio Digital Human is a FREE site that takes the boring images in a science textbook, and turns it into an interactive wonderworld. This site is AMAZING!
You can add and take away different systems of the body, look at info on diseases and health conditions, and even see how an endoscopy is done (in 3-D animation).
Make sure in all the fun in looking at everything for yourself that you let the kids play around on it too.
Maneuver around with all of the buttons on the left side so that you can see what all you can do. Also, make sure that you activate the “navigator” button in the middle at the bottom so that you can see all sides of your human (you have a choice of male or female).
Click on the Anatomy and Conditions buttons and scroll down on the right for more options. Have fun learning!