THORAX AND ABDOMEN OF THE HORSE 103 



A. subclavia dextra 



7/ J" Aa. carotides communes. 



A. subclavia sinistra. 



*/ 



Vena cava cranialis. 



A. pulmonalis 

 Right atrium, 



Right ventricle 

 Vena cava caudalis 



Ductus venosus. -- 



Aortic arch. 

 Ductus arteriosus. 

 I.ungs. 



"" Left atrium. 

 Aorta. 



"~ Aorta. 

 "■ Left ventricle. 



V. portae. 



Vena cava caudalis. 



V. umbilicalis. 



f^ \ \\ A. caeliaca. 



/^^tA — \ \ A. mesenterica cranialis. 



A. iliaca externa dextra 

 A. hypogastrica dextra. 



A. umbilicalis dextra. 



Fig. 84. — Diagram of the foetal circulation. 



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