Just download lwo-object and the lws-scene and you are ready to create the medical scenes you need.
There is also details inside the mouth.
You can open the mouth with the morph target that is allready assigned to the body-layer.
Bundeled scene is ready, so that you can render similar frames as the screen shot shows.
Just import the model and you are ready to animate.
Please check out the test animation in the previews below.
Movie is in the quicktime mov-format.