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: Surgery
Heavy pressure application during mask ventilation may compress: 
Select and explain. 
A. Marginal mandibular nerve., B. Laryngeal nerve., C. Arytenoid cartilage., D. All of the above.
A: Marginal mandibular nerve.
Answer: A: Marginal mandibular nerve. 
Explanation: Heavy pressure application doing mask ventilation may compress the marginal – mandibular branch of facial N in angle of mandible Region.