True about caudate lobe of liver is:-

**Core Concept**
The caudate lobe of the liver is a distinct anatomical structure that serves as a reservoir for blood and has a unique drainage pattern. It receives blood from the hepatic artery and portal vein and drains into the inferior vena cava through the caudate vein.

**Why the Correct Answer is Right**
The caudate lobe is an important structure in liver anatomy, and its unique blood supply and drainage pattern make it a key feature to recognize. The caudate vein, which drains the caudate lobe, is a small vein that empties directly into the inferior vena cava, bypassing the hepatic veins. This allows the caudate lobe to function as a reservoir for blood, maintaining liver function in the event of hepatic dysfunction.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the caudate lobe is not a part of the left lateral lobe of the liver. The left lateral lobe is a separate anatomical structure that includes segments II and III of the liver.

**Option B:** This option is incorrect because the caudate lobe does not drain into the hepatic veins. Instead, it drains directly into the inferior vena cava through the caudate vein.

**Option C:** This option is incorrect because the caudate lobe is not involved in the formation of the gallbladder. The gallbladder is formed from the embryological foregut, which also gives rise to the liver.

**Option D:** This option is incorrect because the caudate lobe is not a part of the right medial lobe of the liver. The right medial lobe is a separate anatomical structure that includes segments IV and V of the liver.

**Clinical Pearl / High-Yield Fact**
The caudate lobe is often referred to as the "paradigm of liver anatomy" due to its unique blood supply and drainage pattern. Recognizing the caudate lobe is essential for understanding liver anatomy and for performing liver resections and other surgical procedures.

**Correct Answer: C. The caudate lobe of the liver drains directly into the inferior vena cava through the caudate vein.**

✓ Correct Answer: A. It receives blood supply from both right and left hepatic aery