This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb bones and muscles (proximal region) & Scapular movements, Subject name: Anatomy
[{'content': 'Dropped shoulder occurs due to paralysis of \nSelect and explain. \nA. Deltoid, B. Trapezius, C. Teres minor, D. Serratus anterior', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Elevation of the scapula (as in shrugging the shoulders)The movement is brought about by the upper fibres of the trapezius and by the levator scapulae. It is associated with the elevation of the lateral end, and depression of the medial end of the clavicle. Spinal accessory nerve supplies trapezius muscle and may get injured in trauma or damage during surgery, resulting in weakness of the trapezius muscle and drooping of shoulder.', 'role': 'assistant'}]