Anatomy Study - Torso - 2

High Res on my DeviantArt: https://www.deviantart.com/davidbock
Hello viewers,
viewers, viewers, are you watching viewers? You need to be watching to understand that this is the second project in my anatomy study series on the torso. Again based on the models provided by Proko
https://www.youtube.com/user/ProkoTV
Last time I did the study on the front of the torso, so now it's the back's turn. I tried to outline the visible and hidden muscle groups and give a sense of the muscle fiber's direction, while naming the bunch.
Feel free to correct me on any anatomical screw ups.
3 more torso studies coming up in the next 3 days.
See ya :D