Question

difference between ulna and radius

Answer 1

http://en.wikipedia.org/wiki/Radius_(bone)

http://en.wikipedia.org/wiki/Ulna

Answer 2

Observe the wrists, both the radius and the ulna have a styloid process. They are different in that the styloid process of the radius is closest to the medial plain of the wrist, while the styloid process of the ulna forms the side of the wrist, or the lateral margin.