Google Body is a news service by Google, just as Google Earth. Google maps or Google Street View, which will enable you to explore human body.
You can see 3D model of human anatomy in very details, such as nervous systems, the circulator, skeleton. bones and muscles etc. Body Browser is a 3D model of the human anatomy that includes various layers.
I know how expensive books medical students buy to study about human body, but now they can save their money for other productive things.