ULNA: Anatomy, ulna, bone -
ULNA: Linear measure in ancient Rome; It was the same as elbow.
Measure of ancient length that was equivalent to elbow and that was used in ancient Rome. In Anatomy it means ulna (the bone of the forearm)
ulna-refers to the bone which, together with the radius, constitute the anterior extremity of vertebrate tetrepods. In humans it corresponds to the ulna-