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FISSURES AND LOBES. 

 Fig. 171.* 



The longitudinal fissure in front of this junction lodges the fibrous 

 cord of the umbilical vein, and is generally crossed by a band of hepatic 

 substance called the pons hepatis. 



The Fissure for the ductus venosus is the shorter portion of the longi- 

 tudinal fissure, extending from the junctional termination of the trans- 

 verse fissure to the posterior border of the liver, and containing a small 

 fibrous cord, the remains of the ductus venosus. This fissure is there- 

 fore but a part of the longitudinal fissure. 



The Transverse fissure is the short and deep fissure, about two inches 

 in length, through which the hepatic ducts, hepatic artery, and portal 

 vein enter the liver. Hence this fissure was considered by the older 

 anatomists as the gate (porta) of the liver ; and the large vein entering 

 the organ at this point, the portal vein. At their entrance into the 

 transverse fissure the branches of the hepatic duct are the most 

 anterior, next those of the artery, and most posteriorly the portal vein. 



The Fissure for the gall-bladder is a shallow fossa extending forwards, 

 parallel with the longitudinal fissure, from the right extremity of the 



* The under surface of the liver. 1 . The right lobe. 2. The left lobe. 3. 

 The lobus quadratus. 4. The lobus Spigelii. 5. The lobus caudatus 6. The 

 longitudinal fissure ; the numeral is placed on the rounded cord, the remains of 

 the umbilical vein. 7. The pons hepatis. 8. The fissure for the ductus 

 venosus ; the obliterated cord of the ductus is seen passing backwards to be 

 attached to the coats of the inferior vena cava (9). 10. The gall-bladder lodged 

 in its fossa. 11. The transverse fissure, containing from before backwards, the 

 hepatic duct, hepatic artery, and portal vein. 12. The vena cava. 13. A 

 depression corresponding with the curve of the colon. 14. A double depression 

 produced by the right kidney and its supra-renal capsule. 15. The rough sur- 

 face on the posterior border of the liver left uncovered by peritoneum ; the cut 

 edge of peritoneum surrounding this surface forms part of the coronary liga- 

 ment. 16. The notch on the anterior border, separating the two lobes. !/ 

 The notch on the posterior border, corresponding with the vertebral column. 



