## **Core Concept**
The hepatoduodenal ligament, also known as the portal triad or portal ligament, is a part of the lesser omentum. It connects the liver to the duodenum and contains vital structures that pass between the liver and the gastrointestinal tract.

## **Why the Correct Answer is Right**
The hepatoduodenal ligament contains three main structures: the **common bile duct** (or common bile duct), the **hepatic artery proper**, and the **portal vein**. These structures are crucial for digestion and nutrient absorption. The common bile duct carries bile from the liver and gallbladder to the duodenum. The hepatic artery proper supplies oxygenated blood to the liver. The portal vein brings nutrient-rich blood from the gastrointestinal tract to the liver for processing.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Typically contains the portal vein, hepatic artery, and common bile duct.
- **Option B:** Usually part of the lesser omentum.
- **Option C:** Contains structures that are critical for digestion and metabolism.
- **Option D:** This option likely contains an incorrect statement regarding the hepatoduodenal ligament but without specifics provided in the query.

## **Clinical Pearl / High-Yield Fact**
A key clinical correlation is the **contents of the hepatoduodenal ligament**, often remembered by the mnemonic **"DVC"** - Duct (common bile duct), Vessel (hepatic artery), and Cord (portal vein). This ligament is also a site where the **portal triad** structures can be found.

## **Correct Answer:** D.