This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
In a case of chest pain with pericarditis and pericardial effussion, pain is referred by 
Select and explain. 
A. Phrenic nerve, B. Superficial cardiac plexus, C. Deep cardiac plexus, D. Vagus nerve
A: Phrenic nerve
Answer: A: Phrenic nerve 
Explanation: The fibrous and parietal pericardia are supplied by phrenic nerves.They are sensitive to pain.Pain of pericarditis originates in the parietal pericardium alone. B D CHAURASIA'S HUMAN ANATOMY UPPER LIMB THORAX-VOLUME-1 SIXTH EDITION Page no-251