Liver anatomy

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Transcript of Liver anatomy

  • 1. The Liver C.Masina
  • 2. The Liver The largest internal body organ Largest gland Largest organ apart from skin Weighs about 1.5kg Found in the upper abdominal cavity: extends from right upper quadrant to left upper quadrant of the abdomen Attached to diaphragm by falciform and coronary ligaments Left and right triangular ligaments
  • 3. Functions Bile production and secretion Detoxification Storage of glycogen Protein synthesis Production of heparin and bile pigments Erythropoiesis (in fetus)
  • 4. Liver surfaces Divided into 2 anatomical regions: 1.Diaphragmatic surface: Smooth and dome-shaped surface Anterior liver part Inferior to diaphragm Separated from diaphragm by subphrenic recess and from posterior organs {kidney and suprarenal glands} by hepatorenal recess Covered by peritoneum except
  • 5. 1.Diaphragmatic surface
  • 6. 2. Visceral surfaceCovered by visceral peritoneum except porta hepatis and gall bladder bed. The visceral surface is related to: Right side of the stomach i.e. gastric and pyloric areas Superior part of the duodenum i.e. duodenal area Lesser omentum Gall bladder Right colic flexor and right transverse area ; colic area Right kidney and suprarenal gland; Renal area
  • 7. Posterior liver view
  • 8. Liver lobesRight and left lobeFunctionally independent i.e. each with own blood and nervesupplyBlood supply in by:Hepatic arteryPortal veinBlood out through:Vein and biliary drainage
  • 9. Liver lobes1.The Right lobeDemarcated by : 1. Gall bladder fossa 2. Inferior vena cava fossa 3. Imaginary line from fundus of gall bladder and inferior vena cava
  • 10. Liver lobes2. Left lobe Divided into: Medial and lateral segments 1.Medial superior caudate lobe 2.Medial inferior - quadrate lobe
  • 11. 2. Left lobe cont The lateral segment is separated from the medial segments by: On visceral surface: 1. fissure of ligamentum teres (round ligament) 2. fissure of ligamentum venosum On diaphragmatic surface: 1. Attachment of falciform ligament
  • 12. Visceral surface1. The round ligament(ligamentum teres) obliterated umbilical vein2. The ligamentum venosum fibrous remnant of fetal ductus vein3. The Porta hepatis (hepatic potal; portal fissure) - transverse fissure on the visceral surface of the liver. It gives passage to the: 1. Portal vein 2. Hepatic artery 3. Hepatic nerve plexus 4. Hepatic ducts 5. Lymphatic vessels
  • 13. Peritoneal relations of the LiverThe Lesser omentum Encloses the portal triad (bile duct, hepatic artery and portal vein ) Passes from the liver to lesser curvature of the stomach + 2 cm of duodenum Thick free edge -- hepatoduodenal ligament Sheet like remainder hepatogastric ligament
  • 14. To be continued . To be continued.. To be continued..