This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Winging of scapula is due to damage to the nerve supply of? 
Select and explain. 
A. Serratus anterior, B. Latissimus dorsi, C. Trapezius, D. Deltoid
C: Trapezius
Answer: C: Trapezius 
Explanation: Trapezius Iatrogenic injury of the spinal accessory nerve (usually accidental damage during minor neck surgery) is the most common cause of accessory nerve palsy. Although rare, this kind of damage can cause extensive morbidity, including numbness, paralysis, pain, and winging of the scapula. In jugular foramen syndrome, caused by pathologies including nasopharyngeal carcinoma or a glomus tumor, lesions of the glossopharyngeal, vagus and accessory nerves coexist.