I study nutrition, and with that comes a lot of anatomy and physiology. Awesome subject. I have considered becoming a medical illustrator, but that requires a lot more skills than what I've got. It's hard work. I think I'll stick to drawing the beautiful parts of the human body (muscles, skeleton and such, versus most internal organs) when I feel like doing it. If you fancy this subject too, I recommend this book. Needed it for school, and got totally blown away by the illustrations.
So, here's a small sample of creations done during class:
A little goofy something at the end, hoho: