Here are some studies that I did for my anatomy class I have come a long way since then. I paired then with my life drawing.
I was very lucky that my our professor had access to the morgue at Georgetown University Hospital. We study and draw the cadavers for a couple of days. It was an amazing experience.
All the bodies were donated to science for anatomical studies concerning the muscles of mastication. Therefore none of then had heads, as they were kept in a different lab. I would have like to study the face muscles closely but I was also relly happy I didn't have to look at anyone's face in a morgue.
The best part was that my Professor let me use Zbrush for my assignments!