Anatomy of liver

Basic anatomy of liver

1. ANATOMY OF LIVER

2. Liver is one of the largest organ in the body and weighs about 1200-1500g.  It is a wedge shaped organ which lies just beneath the diaphragm, with its base to the right and apex to the left.

3. 2 anatomical lobes -right and left Right lobe further divided into caudate lobe on the posterior surface and quadrate lobe on the inferior surface. A fold of peritoneum called falciform ligament separates the right and left lobe anteriorly. Image source: Sherlock, S., & Dooley, J. (2008). Diseases of the Liver and Biliary System. Chichester, GBR: Wiley. Retrieved from http://www.ebrary.com http://site.ebrary.com/lib/cduni/reader.action?ppg=19&docID=10236665&tm=1427937381757

4. Liver is separated posteriorly by a fissure for ligamentum venosum . Image source: Sherlock, S., & Dooley, J. (2008). Diseases of the Liver and Biliary System. Chichester, GBR: Wiley. Retrieved from http://www.ebrary.com http://site.ebrary.com/lib/cduni/reader.action?ppg=19&docID=10236665&tm=1427937381757

5. Inferior part of the liver is separated by the fissure for ligamentum teres . Image source: Sherlock, S., & Dooley, J. (2008). Diseases of the Liver and Biliary System. Chichester, GBR: Wiley. Retrieved from http://www.ebrary.com http://site.ebrary.com/lib/cduni/reader.action?ppg=19&docID=10236665&tm=1427937381757

6. Porta hepatis is the fissure on the inferior surface of the  right lobe through which the poral triad which are portal vein, heopatic artery and bile duct enter the liver. Image source:  Lindor , K. D., & Vargas, H. E. (2010). Practical Gastroenterology and Hepatology : Liver and Biliary Disease. Hoboken, NJ, USA: Wiley-Blackwell. Retrieved from http://www.ebrary.com http://site.ebrary.com/lib/cduni/reader.action?ppg=20&docID=10419293&tm=1427942102004

7. Blood supply Liver receives about 70% of its blood supply via the portal vein and 30% from the hepatic artery . Hepatic artery divides into right and left branches   . Right branch divides into anterior and posterior branches. Left branch divides into medial and lateral branches.

8. There are 3 main hepatic veins which drains into the Inferior vena cava A large central vein runs between the right and left halves of the liver and receives blood from each. Then right and left veins which lie further lateral to the central vein.