O: Scapula I: Middle facet on greater tuberosity of humerus A: Laterally rotate arm; helps to hold humeral head in glenoid cavity of scapula WikipediaQuestions
O: Top of scapula I: Superior facet on greater tuberosity of humerus A: Initiates and assists deltoid in abduction of arm and acts with other rotator cuff muscles WikipediaQuestions
O: Scapula I: Inferior facet on greater tuberosity of humerus A: Laterally rotate arm; helps to hold humeral head in glenoid cavity of scapula WikipediaQuestions
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