Stemholder
Supinator , m. Supinator, looks like a thin diamond-shaped plate, is located at the proximal end of the forearm from the side of its outer-rear surface. The muscle originates from the lateral epicondyle of the humerus, the crest of the ulnar arch supports and the capsule of the elbow joint, is directed obliquely downward and outward, covering the upper end of the radius bone; It is attached along it from the tuberosity to the attachment point m. Pronator teres.
Function: rotates the forearm outward (spinning) and takes part in extending the arm at the elbow joint.
Innervation: n. Radialis [CV-CVII (CVIII)].
Blood supply: a. Recurrens radialis, a. Recurrens interossea, a. Radialis.
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