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
Which of the following nerve runs with vagus between internal carotid artery and internal jugular vein till the angle of mandible? 
Select and explain. 
A. Accessory nerve, B. Hypoglossal nerve, C. Glossopharyngeal nerve, D. Maxillary nerve
B: Hypoglossal nerve
Answer: B: Hypoglossal nerve 
Explanation: Note :

Hyoglossal nerve passes lateral to internal and external carotic arteries.
Superior larngeal nerve passes medial to both arteries.
Glossopharyngeal and pharyneal branch of vagus pass between them.


The vagus lies most medial in the foramen.
Glossopharyngeal nerve and inferior petrosal sinus exit from the anterior compartment of the foramen.
Vagus and accessory nerves exit from the middle compartment.
The sigmoid sinus exits from the posterior compartment is soon joined by the inferior petrosal sinus becomes the internal jugular vein.