176 



HUMAN ANATOMY. 



FIG. 105. 



Diagram of the foetal circulation: 1, umbilical cord, with veins and arteries; 

 2, placenta; 3, divisions of umbilical vein; 4, hepatic branches; 5, ductus 

 venosus; 6, inferior vena cava; 7, portal vein; 8, right auricle; 9, left auricle; 

 10, left ventricle; 11, arch of aorta; 14, superior vena cava; 15, right ventricle: 

 16, pulmonary artery; 17, ductus arteriosus; 18, descending aorta; 19, umbilical 

 arteries. 



