Triceps Muscle Anatomy See also: Triceps Tendinitis 727.09 Triceps Tendon Repair 24342 Triceps Tendon Rupture 841.3 Muscle Innervation Origin Insertion Action Nerve Root Triceps Radial Infraglenoid(LH), Post.Humerus(lat H.), Post. Humerus (MH) Olecranon Extends forearm C6,7,8,T1 post cord
