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ulna

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{adj: ulnar} relating to or near the ulna

{n: anconeous muscle, musculus anconeus} the muscle that extends the forearm and abducts the ulna in pronation of the wrist

{n: olecranon, olecranon process} process of the ulna that forms the outer bump of the elbow and fits into the fossa of the humerus when the arm is extended

{n: pivot joint, rotary joint, rotatory joint, articulatio trochoidea} a freely moving joint in which movement is limited to rotation
"the articulation of the radius and ulna in the arm is a pivot joint"

{n: ulna, elbow bone} the inner and longer of the two bones of the human forearm


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