Retraction of scapula at sternoclavicular joint is done by:: (A) Serratus anterior, (B) Trapezius, (C) Subscapularis, (D) Supraspinatus
Answer is B. Retraction means moving backward of scapula at sternoclavicular joint. It is done by the following muscles: Trapezius Rhomboid major Rhomboid minor. Subscapularis helps in medial rotation of humerus. Serratus anterior helps in protraction of scapula. Supraspinatus helps in adduction.