Shoulder adduction
The long head crosses the shoulder and can assist the arm’s return toward the body.
Image notes & reference views
Body view: original superficial posterior illustration. Gold cutaways open superficial layers to show the deeper medial head; the cut surfaces are illustrative. Attachment map: F. H. Gerrish (1902), public domain; palette adapted to gold and charcoal. Movement views show successive positions, not a muscle-specific animation.
University of Washington · TricepsAttachment-map sourceMovement & palpation referenceMovement directory
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