Which of the following doesn’t divide liver into 2 halves?
**Core Concept**
The liver is a vital organ in the abdominal cavity, divided into lobes or sections by various structures to facilitate its function and anatomy. The division of the liver into two main halves is primarily based on its vascular supply and the arrangement of its hepatic veins.
**Why the Correct Answer is Right**
The correct answer is the one that does not contribute to the division of the liver into two halves. The **falciform ligament** is a fibrous structure that connects the liver to the anterior wall of the abdomen and the diaphragm, but it does not divide the liver into two halves. On the other hand, the **porta hepatis** (the hepatic pedicle) and the **ligamentum teres** (the round ligament of the liver) are both structures that do divide the liver into two halves.
**Why Each Wrong Option is Incorrect**
**Option A:** The **porta hepatis** (hepatic pedicle) is a fibrous structure that connects the liver to the inferior vena cava and the hepatic arteries and portal vein. It divides the liver into two main halves, making it incorrect.
**Option B:** The **ligamentum teres** (round ligament of the liver) is a fibrous remnant of the umbilical vein that connects the liver to the anterior abdominal wall. It also divides the liver into two halves, making it incorrect.
**Clinical Pearl / High-Yield Fact**
It's essential to remember the key structures that divide the liver into two halves, including the porta hepatis and the ligamentum teres, as they are crucial for understanding liver anatomy and its clinical implications.
**Correct Answer: D. Falciform ligament**