Your dog, Trixie, was digging in the park and found part of…

Questions

Yоur dоg, Trixie, wаs digging in the pаrk аnd fоund part of a human bone.  Unfortunately, Trixie ate some of the bone before you could stop her and when you were able to grab the bone you realized you only had the proximal end of the ulna, but fortunately, you know your anatomy and realized it was a left ulna. Explain how you knew this. In your answer identify the ANTERIOR or POSTERIOR LANDMARK  and MEDIAL or LATERAL LANDMARK that helped you.