270- Fetal Circulation & Fetal-Postnatal Derivatives

Blood in umbilical vein has a PO2 of about what?

Blood in umbilical vein is ≈ 80% saturated with what?

What are the 3 important shunts in fetal circulation?

Blood entering fetus through the
umbilical vein is conducted via the what?

Blood entering fetus through the umbilical vein is conducted via the ductus venosus into the what?

Blood entering fetus through the umbilical vein is conducted via the ductus venosus into the IVC, bypassing what?

Most of the highly Oxygenated blood
reaching the heart via the IVC is directed
through the what?

Most of what blood reaching the heart via the IVC is directed through the Foramen Ovale?

Most of the highly Oxygenated blood
reaching the heart via the IVC is directed
through the foramen Ovale and pumped
into the what?

Most of the highly Oxygenated blood
reaching the heart via the IVC is directed
through the foramen Ovale and pumped
into the aorta to supply what?

Deoxygenated blood from the SVC
passes through the RA, to the RV, to the main pulmonary artery, to the Ductus arteriosus, to the what?

Deoxygenated blood from the SVC
passes through the what (?), to the RV, to the main pulmonary artery, to the Ductus arteriosus, to the Descending aorta?

What type of blood from the SVC passes through the RA, to the RV, to the main pulmonary artery, to the Ductus arteriosus, to the descending aorta?

Deoxygenated blood from where passes through the RA, to the RV, to the main pulmonary artery, to the Ductus arteriosus, to the descending aorta?

Shunt is due to what?

Deoxygenated blood from SVC passes through what?

At birth, infant takes a breath. What does this lead to?

At birth, infant takes a breath.
What leads to increased left atrial pressure vs right atrial pressure?

At birth, infant takes a breath.
What does Decreased resistance in pulmonary vasculature leads to?

At birth, infant takes a breath.
What happens to the foramen ovale?

At birth, infant takes a breath.
What happens to O2?

At birth, infant takes a breath.
What happens to prostaglandins?

At birth, infant takes a breath.
Decrease in prostaglandins leads to what?

What helps close PDA? Leading to what?

Indomethacin helps close what?

What keep PDA open?

Fetal-postnatal derivatives

AllaNtois ---> urachus

What is Urachus part of?

Fetal-postnatal derivatives

Ductus arteriosus

Fetal-postnatal derivatives

Ductus venosus

Fetal-postnatal derivatives

Foramen ovale

Fetal-postnatal derivatives

Notochord

Fetal-postnatal derivatives

UmbiLical arteries

Fetal-postnatal derivatives

Umbilical vein