Here are my anatomy back studies for this assignment. I decided to add references to help give an idea of what i was using as reference. I think I have the idea of how the muscles on the back are placed, I tried my best differentiating male and female backs. I also decided to do the gesture and just render and detail the back. I like to build slowly and by parts rather trying to render everything. Also, this is me doing the back anatomy first before going to chest,arms and legs.

4 from reference and the one that is not referenced definitely shows.. the muscles around the teres major/minor are the most confusing for me i think