Blood-Vessel-System of theLiverThe liver (Hepar) is the biggest gland ofthe body. It is lying near the diaphragm(Diaphragma) and above the stomach(Ventriculus gaster). The biggest part of itis lying in the right side of the bodywhile the left lobe of the liver is stretch-ing repeatedly to the left side. Its lowestground is divided by two .parallelyrunning fissures (5 and 6) as well as onetransversal fissure, the portal fissure(Porta kepatis, 7) into different singlelobes (1, 2, 3 and 4). The gall bladder(Vesicafettea, 9) is lying in the right fossafor the gall bladder (Fossa vesicae felleae,5); the rest of the embryonic umbilicalvein turns out in the left liver fissure (Fis-sura ligamentum teretis, 6) as a round liga-ment of the liver (Ligamentum feres hepatis,S) which is ending in the back of the por-

tal vein (Vena portae, 14). The liverdiffers from all other organs by beingsupplied with two different sorts ofblood: arterial blood through the hepat-ic artery (Arteria hepatica communis) andvenous blood through the portal vein(Vena portae, 14). Two different subs-tances are taken away: biliary fluidthrough the hepatic duct (Ductus be-paticus communis, II), venous bloodthrough the hepatic veins (Venae hepati-cae, 15). The portal vein (Venaportae, 14)collects its venous blood from the diges-tive organs and branches out in the liverup to the finest capillary vessels. It ishere where the biliary fluid separatesfrom the blood and is brought to theequally fine hepatic ducts (Ductulibiliferi)which join to the main hepatic duct(Ductus hepaticus communis, 11). The lastmentioned together with the cystic duct(Ductus cysticus, 10) are passing on as bileduct (Ductus choledocbus, 12) whose bili-ary fluid is led to the duodenum.

1. Right lobe of the liver, Lobushepatis dexter

2. Left lobe of the liver, Lobus hepatissinister

3. Quadrate lobe, Lobus quadrates4. Caudate lobe, Lobus caudatus5. Fossa for the gall bladder, Fossa

vesicae fetteae6. Left liver fissure, Fissura ligamentum

teretisPortal fissure, Porta hepatisRound ligament of the liver,Ligamentum teres hepatisGall bladder, VesicafelleaCystic duct, Ductus cysticusHepatic duct, Ductus hepaticus

7.8.

9.10.11.

12.13.

14.15.

For JS 8/1 onlyVascular architecture of the liver

16. Branches of the left segmental cleft17. Median vein.18. Branches of the ventral segmental

cleft19. Branches of the dorsal segmental

cleft20. Inferior caval vein

communisBile duct, Ductus cboledochusHepatic artery, Arteria hepaticacommunisPortal vein, Vena portaeHepatic veins, Venae hepaticae

© SOMSO models are copyrighted.

Segmentumsuperiussinistrum

Y

Segmentumbasalesinistrum

Segmentumquadratumsuperius

Segmentum superiusdextrum I

Segmentumintermedium

sinistrum

tSegmentum inferius Segmentum

inferiusdextrum

Segmentumquadratuminferius

Segmentumcysticum

Segmental structure of the liver

Segmentum superiusdextrum

y

Segmentum•J. superius

sinistrum

Structure segmentaire du foie Estructura segmentaria del higado

GUt nur fur JS 8/1Gefafiarchitektur dcr LcberFor JS 8/1 onlyVascular architecture of the liverSculement pour JS 8/1Architecture vasculaire du foieSolo para JS 8/1Vasijas del higado