This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Heart & Pericardium, Subject name: Surgery
Pain from parietal pericardium is transmitted through? 
Select and explain. 
A. Cardiac plexus, B. Greater splanchinc nerve, C. Intercostal nerve, D. Vagus nerve
D: Vagus nerve
Answer: D: Vagus nerve 
Explanation: ANSWER: (D) Vagus nerveREF: Gray's anatomy 39th edition page 996The pericardium is innervated by the vagus, together with phrenic nerves and the sympathetic trunks. Pericardial pain is typically a sharp severe substernal pain. It may be exacerbated by lying back or on the left side and relieved by leaning forward. It occasionally radiates to the upper border of trapezius.