All of the following aeries supply the first 2 cm of the duodenum, EXCEPT?
**Core Concept**
The first 2 cm of the duodenum receives a unique blood supply due to its embryological origin from the foregut. This region is supplied by branches from nearby arteries that are not typically associated with the duodenum.
**Why the Correct Answer is Right**
The first 2 cm of the duodenum is supplied by the superior pancreaticoduodenal artery, the gastroduodenal artery, and the right gastroepiploic artery. These arteries arise from the hepatic artery and the celiac trunk. The superior pancreaticoduodenal artery is particularly important as it supplies the duodenum, pancreas, and head of the gallbladder. The gastroduodenal artery and right gastroepiploic artery provide additional supply to the duodenum and stomach.
**Why Each Wrong Option is Incorrect**
**Option A:** This option does not correctly represent the blood supply to the first 2 cm of the duodenum. However, without more information, it's hard to determine why this is incorrect.
**Option B:** This is not a correct representation of the blood supply to the first 2 cm of the duodenum.
**Option D:** This option is incorrect as it does not accurately describe the blood supply to the first 2 cm of the duodenum.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that the blood supply to the duodenum changes along its length, with the first 2 cm receiving a unique blood supply from the superior pancreaticoduodenal artery, gastroduodenal artery, and right gastroepiploic artery.
**Correct Answer:** D