Quadrate lobe is known as:
**Core Concept**
The quadrate lobe is a small, triangular area of the liver located on the right side of the liver, beneath the diaphragm. It is a part of the larger right lobe of the liver and plays a crucial role in liver function, including detoxification and metabolism.
**Why the Correct Answer is Right**
The quadrate lobe receives blood supply from the right coronary artery via the hepatic artery and drains into the hepatic veins, which eventually empty into the inferior vena cava. It also receives bile from the right hepatic duct and is drained by the left hepatic duct. The quadrate lobe is a key area for liver function, as it contains a high concentration of hepatocytes, which are the main cell type of the liver responsible for liver function.
**Why Each Wrong Option is Incorrect**
* **Option A:** This is not a recognized term for the quadrate lobe.
* **Option B:** The caudate lobe is a separate area of the liver, located on the posterior aspect of the liver, and has distinct blood supply and drainage.
* **Option C:** The quadrate lobe is not located on the left side of the liver, but rather on the right side.
**Clinical Pearl / High-Yield Fact**
The quadrate lobe is often involved in liver pathology, such as liver abscesses and metastatic disease, due to its rich blood supply and high concentration of hepatocytes.
**Correct Answer:** C.