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': 'A rock climber falls on his shoulder, resulting in a chipping off of the lesser tubercle of the humerus. Which of the following structures would most likely have structural and functional damage? \nSelect and explain. \nA. Supraspinatus muscle, B. Infraspinatus muscle, C. Subscapularis muscle, D. Teres minor muscle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The subscapularis muscle inses on the lesser tubercle of the humerus. Muscle Attachment Supraspinatus Greater tuberosity Infraspinatus Greater tuberosity Teres minor Greater tuberosity Subscapularis Lesser tuberosity', 'role': 'assistant'}]