Question

describe the role of the scapula and shoulder girdle in shoulder abduction beyond 90 degrees. they rotate medially they move to allow further abduction they remain stationary they prevent further movement

Explanation:

Shoulder abduction beyond 90 degrees requires coordinated movement of the scapula and shoulder girdle (scapulothoracic rhythm). The scapula upwardly rotates, tilts, and protracts to reposition the glenoid fossa, enabling the arm to lift higher than what the glenohumeral joint alone can achieve. Medial rotation is not the primary action here, remaining stationary would limit movement to 90 degrees, and preventing movement is the opposite of their function.

Answer:

B. They move to allow further abduction