NB// There are no defined extensors of the shoulder. Those involved (''brachiocephalic'' m., ''biceps brachii'', ''supraspinatus'', and ''ascending pectorals'') have other, more primary roles. | NB// There are no defined extensors of the shoulder. Those involved (''brachiocephalic'' m., ''biceps brachii'', ''supraspinatus'', and ''ascending pectorals'') have other, more primary roles. |