HLSC 2463U Lecture Notes - Lecture 5: Congenital Heart Defect, Ductus Venosus, Umbilical Vein
Document Summary
Lungs do not work; the fetus gets o2 from the maternal blood supply. Fetuses don"t eat, they need to get the nutrients from the mother. There is an umbilical vein (oxygenated blood delivered to the fetus via the mother) Umbilical artery goes from the fetus to the placenta and is deoxygenated, Umbilical vein high o2 high nutrients (from mom) goes to the heart and bypasses the liver the liver in the fetus does not do much and doesn"t need the blood. Ductus venosus umbilical vein draining into the inferior vena cava. Foramen ovale between la and ra. Ductus arterious pulmonary trunk to the aorta. Openings so that blood does not have to go to the lungs ^ Cyanotic blue tinge of the skin, more severe. Acyanotic normal colour of the skin. Abnormal flow of blood to left side to right side or vice versa. Left side of the heart oxygenated flows to the right side of the heart.
