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
Muscles spared during injury to cranial root of accessory nerve 
Select and explain. 
A. Stylopharyngeus, B. Palatopharyngeus, C. Salpingopharyngeus, D. Cricopharyngeus
A: Stylopharyngeus
Answer: A: Stylopharyngeus 
Explanation: All muscles of the pharynx, except stylopharyngeus, are supplied by the pharyngeal plexus