This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerve supply, Nerve Lesions, Subject name: Anatomy
Nerve involved most commonly in fracture neck of humerus is 
Select and explain. 
A. Musculocutaneous, B. Median nerve, C. Ulnar nerve, D. Axillary nerve
D: Axillary nerve
Answer: D: Axillary nerve 
Explanation: The axillary nerve ( C5,C6) passes close to surgical neck of humerus. -Supplies teres minor. Dislocation of shoulder or fracture of surgical neck of humerus can damage axillary nerve. Effects of damage- deltoid is paralyzed loss of power of abduction up to 90deg at shoulder, sensory loss over lower half of deltoid.