So I sit at my desk waiting for calls sense I work as support and am sketching in my notebook listening to Pandora. I started doing some sketches of anatomy and relised something. When does the Ulna and Radius crass each other so I know which muscle groups to define on the lower arm O.o? I did some simple base sketches trying to work it out in my head then felt my own arm as I twisted it but being a rather over weight man I could not feel vary well when this happens. Any one have any good examples of when this happens? I know the reason we cant turn our rist so fare is because of these bones crossing each other.