MCQOPTIONS
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				| 1. | 
                                    The first part of the duodenum: | 
                            
| A. | lies at the level of L2 in the supine body | 
| B. | is approximately 10cm long in the adult | 
| C. | partially overlies the right crus of the diaphragm and psoas muscle | 
| D. | is entirely retroperitoneal | 
| E. | receives the common opening of the bile duct on its posteromedial wall | 
| Answer» D. is entirely retroperitoneal | |