Peters, Michael
June 2004
BMA A-Z Family Medical Encyclopedia;2004, p767
Reference Entry
An encyclopedia entry for "ulna" is presented. It is the bone running down the forearm on the side of the little finger. The ulna is the longer of the two forearm bones. It is the upper end of the ulna which articulates with the radius and extends into a rounded projection that fits around the lower end of the humerus. The lower end of the ulna articulates with the lower part of the radius and the carpals.


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