fetal circulation

Question 1

staring from superior+inferior vena cava … fetal circulation step by step

Answer 1

1- superior+inferior vena cava
2- drain in RA
3- to RV
4- pulmonary trunk
5- through ductus arteriosus passing the lungs to the aorta
6- descending aorta
7- umbilical arteries
8- placenta for oxygenation
9- umbilical vein
10- ductus venosus
and again to inferior vena cava

Question 2

ducts normally in fetal circulation but should close after delivery

Answer 2

ductus arteriosus and ductus venosus /foramen ovale
should closes after delivery