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Ulna

From Biology-Online Dictionary | Biology-Online Dictionary
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Ulna

(Science: anatomy) The bigger of the two bones that comprise the forearm ( the smaller one is the radius). The largest aspect articulates with the humerus at the elbow joint and the smallest portion of the ulna articulates with the carpal bones in the wrist. The inner and longer of the two bones of the human forearm.A bone found in the arm of tetrapods which articulates proximally with the humerus.