Out of the blue, I was contacted by Josh Goldman, co-creator of an educational Apple II title from 1983 about the heart. "Heartbeat, Heatwork, Heartflow". He then followed it up with a disk image and a scan of the manual and floppy! Here they are!
Wow! Magnificent! Really reminds me of a game I played on my old iPad 2, it was about the human body and it was very well designed.
Seeing this being created way before I existed really does blow my mind!