Liver Gross anatomy

Liver Gross anatomy

1. abdo. location

   • Right Hypochondriac Epigastric Left Hypocondriac
   • Intraperitoneal

2. 4 lobes

   • R, L Caudate; IVC, lig.venosum Quadrate; Lig. Teres, GB fossa

3. 8 segments

   • Horizontal = HPV bifurcation 3 Vertical = (R/M/L) Hepatic v.
   • I = Caudate - Posteriorly around IVC - Supplied by both L&R HPV - Drain directly into IVC by small hepatic v. 
   • II, III are separated from IV and others by falciform lig. (II, III = Left lobe, the others = right lobe)
   • Each seg. own dual vas. supply biliary drainage

4. Ligaments

   • 1. Coronary 2. Triangular 3. Falciform 4. Ligamentum Teres (= Round ligament) 5. Hepatoduodenal 6. Hepatogastric

5. Connective Tissues

   • liver capsule
     • = Glisson's capsule
     • Portal tracts
       • Interlobular CT. surrounds portal triad
     • Interlobular septum
       • Divide parenchyma into lobules
       • Parenchymal reticulin
         • - Collagen Type 3 - Supportive network for hepatocytes and surrounding sinus

6. Blood supply & drainage

   • HPV (60~70%)
   • Hepatic a. (30 ~ 40%)
     • Heaptic sinusoids
       • Central v.
         • Hepatic v.
           • IVC

7. Lymphatic drainage

   • Hepatic nodes - Coeliac nodes

8. Portal triad

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