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: Anatomy
All of the following aeries supply the first 2 cm of the duodenum, EXCEPT? 
Select and explain. 
A. Supraduodenal aery, B. Common hepatic aery, C. Gastroduodenal aery, D. Superior pancreaticoduodenal aery
A: Supraduodenal aery
Answer: A: Supraduodenal aery 
Explanation: The duodenum is supplied by the superior and inferior pancreaticoduodenal aeries, but the first 2 cm receive small branches from a variety of sources:Hepatic aeryCommon hepatic aeryGastroduodenal aerySuperior pancreaticoduodenal aeryRight gastric aeryRight gastroepiploic aeryThis area is clinically impoant because of ulceration.