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The humerus is the upper portion of the arm
that fits into the outer portion of the scapula. Muscles and tendons
anchor themselves on the humerus to create muscles like biceps
and deltoid.
The forearm is situated between the elbow and the
wrist and composed of the ulna and radius. The ulna is a
long bone located on the inner side of the forearm, parallel to the
radius. The ulna converts movement from the elbow, while the radius is
more important in the movement of the wrist and hand.
hand, radius, ulna
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Humerus
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