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
Which of the following abdominal structure will be responsible for sharp pain while doing Abd. surgery ? 
Select and explain. 
A. Parietal peritoneun, B. Liver parenchyma, C. Small intestine, D. Colon
A: Parietal peritoneun
Answer: A: Parietal peritoneun 
Explanation: Ans. is "a" Parietal peritoneum "Embryologically parietal peritoneum is derived from the somatopleural layer* of the lateral plate mesoderm. Its blood supply and nerve supply are the same as those of the overlying body wall. Because of the somatic innervation, it is pain sensitive." - BDC Anatomy All the abdominal viscera and the visceral peritoneum have the same nerve supply i.e. autonomic innervation and therefore are pain insensitive.