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Questions and Answers
what r the veins that form the hepatic portal v?
what r the veins that form the hepatic portal v?
the superior mesenteric v and the splenic v at the transpyloric plane (L1/L2).
how does the fetus obtain oxygen?
how does the fetus obtain oxygen?
from the mother via (placenta circulation).
there r three shunts ( open pre-natally) in the fetal circulation, what are they?
there r three shunts ( open pre-natally) in the fetal circulation, what are they?
1- foramen ovale; between atria, blood bypass pulmonary circulation.
2- ductus arteriosus: link the distal part of aorta to the pulmonary trunk, blood bypass the pulmonary circulation.
3- ductus venosus: take 30% of umbilical blood from the primitive liver to the IVC to ensure enough oxygen reaching the developing brain (foetus's brain).
how does the foramen ovale close after the baby is delivered?
how does the foramen ovale close after the baby is delivered?
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what hormone that decreases after birth and removal of placenta?
what hormone that decreases after birth and removal of placenta?
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a substance released from lungs due to increased O2 concentration and causes the wall closure of ductus venosus, arteriosus?
a substance released from lungs due to increased O2 concentration and causes the wall closure of ductus venosus, arteriosus?
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what hormone keep the ductus venosus and arteriosus open?
what hormone keep the ductus venosus and arteriosus open?
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what does the ductus venosus become after birth?
what does the ductus venosus become after birth?
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what does the the foramen ovale become after birth?
what does the the foramen ovale become after birth?
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