This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
[{'content': 'Regimental band anesthesia is due to lesion of: \nSelect and explain. \nA. Musculocutaneous nerve, B. Axillary nerve, C. Long thoracic nerve, D. Spinal accessory nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B Axillary nerveRef: Kulkarni Clinical Anatomy, 2nd ed. pg. 30The damage to axillary nerve leads to regimental badge anaesthesia.Axillary nerve injury leads to deltoid and teres minor paralysis. The manifestations are:* Loss of rounded contour of shoulder* Sensory loss in skin covering lower part of deltoid.* Loss of abduction from 15deg to 90deg is due to deltoid paralysis.', 'role': 'assistant'}]