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
Nerve which loops around submandibular duct? 
Select and explain. 
A. Mandibular nerve, B. Lingual nerve, C. Hypoglossal nerve, D. Recurrent laryngeal nerve
B: Lingual nerve
Answer: B: Lingual nerve 
Explanation: Submandibular duct It is 5 cm long duct and runs forwards on hyoglossus, between lingual and hypoglossal nerves. At the anterior border of the hyoglossus muscle it is crossed by lingual nerve which loops around it. It opens into the floor of mouth, on the summit of the sublingual papilla at the side offrenulum of tongue.