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15 Cards in this Set
- Front
- Back
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fetal structures within the heart allow blood to bypas what during gestation
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lungs
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What does the foramen ovale do
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shunts blood from the right to left atrium bypassing nonfunctioning fetal lungs
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what does the ductus arteriosus do
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shunts blood from the pulmonary trunk to the aortic arch bypassing the lungs
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what does the 2 large umbilical arteries do
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transport deoxygenated blood from the fetus to the placenta for reoxygenation and metabolic waste removal
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what does the umbilical vein do
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transports oxygenated, nutrient rich blood from the placenta to the fetus
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a small vessel that transports a small volume of blood from the umbilical vein to the inferior vena cava
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ductus venosus
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most blood entering the umbilical vein passes thru what
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the fetal liver
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There is high pulmonary vascular resistance due to
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hypoxia and alveoli that are mostly collapsed
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there is low systemic vascular resistance due to what
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blood flow through the placenta
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oxygenated blood flows form the placenta to where
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through the liver into the inferior vena cava
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How much of the deoxygenated blood returning to the right atrium goes to the right ventricle
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75-85%
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What is the fossa ovalis
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an indentation in the inter-atrial septum and is a remnant of the foramen ovale
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pathologic patent foramen ovale (PFO)
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the foramen ovale remains open after birth
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What is the ligamentum arteriosum
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a tissue connection between the aortic arch and the pulmonary trunk and is the remnant of the ductus arteriosus
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pathologic patent ductus arterisus (PDA)
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the ductus arteriosus remains open after birth
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