Damn, this brought back memories of this edutainment game I had called 3-D Body Adventure. It had a bunch of (more primitive) 3D models of anatomy like this and some really eerie music, and the game-y part was that you'd go into people's bodies and zap different lesions. Found it equally fascinating and terrifying...I remember especially that you could walk around the hospital and it was very much a liminal space feeling. And I think they had this one animation that shows what happens during a heart attack and they include a voice clip of a guy groaning in pain.