Fetal circulation and changes at birth Flashcards
what does umbilical vein become
ligamentum teres
what umbilical arteries become
Medial umbilical ligaments
what does Ductus venosus become
Ligamentum venosum
what does foramen ovale become?
Fossa ovalis
What does Ductus arteriosus become
Ligamentum arteriosum
What was Medial umbilical ligaments?
Umbilical arteries (taking deoxygenated blood to placenta)
What was Ligamentum teres
Umbilical vein (taking oxygenated blood to inferior vena cava at Liver and also hepatic portal)
What was ligamentum venosum
Ductus venosus (connecting umbilical vein to Inferior vena cava)
What was fossa ovalis
Foramen ovale (connecting to right atrium to left atrium)
What was ligamentum arteriosum
Ductus arteriosus (connecting pulmonary trunk directly to arch of aorta
fetal circulation oxygenated blood
Placenta -> Umbilical Vein -> Ductus Venosus (and Liver via hepatic portal) -> Inferior vena cava
Fetal circulation mixed blood
Inferior venacava -> Right atrium -> Right ventricle ->Pulmonary trunk -> Ductus arteriosus -> aorta -> systemic circulation -> umbilical arteries -. Placenta