u6 



THE STUDY OF SIX AND TEN MILLIMETER PIG EMBRYOS 



space between the liver and plica to the right, and the stomach and its omenta to the left, is 

 a caudal continuation of the lesser peritoneal sac. The dorsal wall of the stomach is rotated 

 to the left, its ventral wall to the right. The liver shows a pair of dorsal lobes and contains 



Spinal gang. 



Ndtochord 

 Dorsal aorta. 



feritoneal cavity 

 Lesser sac 



Common hepatic 

 Veiti(R.vil-ellrne) 



Ryentral lobe 

 liver 



Ft. ventricle. 



Spinal cord 

 Spinal nerve 



Post, card, Vein 

 Upper limb bud 

 <5tomach 



L.venfral lobe 

 liver 



Lvenlricle 



FIG. 106. Transverse section through the stomach of a 6 mm. pig embryo. X 26.5. 



Spinal cord 



Notochord 

 Posf. cara/. vein 



Dorsal aorta 



Inf. vena cavtt 



Portal vein 

 ft. umbilical vein 

 nepotic diverticulum 



Myotome 



Postcard Vein 

 Upper limb bud 



Dorsal rnesoqastrium 

 Dorsal lobe Liver 



Lvitelline Vein 

 L.umbilical vein 



Peritoneal cavity 

 FIG. 107. Transverse section through the hepatic diverticulum of a 6 mm. pig embryo. X 26.5. 



large blood spaces and networks of sinusoids lined with endothelium. Ventral to the liver, 

 the tips of the ventricles are seen. 



Transverse Section through the Hepatic Diverticulum (Fig. 107). The upper 

 limb buds are prominent in this section. The mesonephric folds show the tubules and glomeruli 



