All of the following veins are formed from vitelline vein except
**Core Concept**
The vitelline veins are a pair of embryonic veins that form part of the venous system in the embryo. They play a crucial role in the development of the portal venous system, which connects the gastrointestinal tract to the liver.
**Why the Correct Answer is Right**
The vitelline veins primarily contribute to the formation of the hepatic portal vein, the superior mesenteric vein, and the inferior mesenteric vein. These veins are responsible for draining the gastrointestinal tract and other abdominal organs into the portal venous system, which ultimately drains into the liver. The other veins listed in the options are not formed from the vitelline veins.
**Why Each Wrong Option is Incorrect**
**Option A:** The **hepatic veins** are formed from the common cardinal veins, which are separate from the vitelline veins. They drain deoxygenated blood from the liver into the inferior vena cava.
**Option B:** The **splenic vein** is formed from the splenic and short gastric veins, which are part of the portal venous system. However, it is not directly formed from the vitelline veins, but rather from the left supracardinal vein, which is a separate embryonic vessel.
**Option C:** The **renal veins** are formed from the supracardinal veins, which are separate from the vitelline veins. They drain deoxygenated blood from the kidneys into the inferior vena cava.
**Clinical Pearl / High-Yield Fact**
The vitelline veins are a crucial part of embryonic development, and their formation is essential for the proper development of the portal venous system. Understanding the embryonic origins of the venous system is essential for identifying congenital anomalies and abnormalities in the portal venous system.
**Correct Answer:** D.