| 1. | The truncus arteriosus splits into the ascending aorta and pulmonary artery.
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| 2. | As with truncus arteriosus, it was a rare occurrence.
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| 3. | The two asymptotes of a truncus are parallel to the coordinate axes.
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| 4. | Persistent truncus arteriosus involves a single valve; aortopulmonary window is a septal defect.
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| 5. | Fetal circulation does not include the lungs, which are bypassed via the truncus arteriosus.
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| 6. | Less common defects in the association are truncus arteriosus and transposition of the great arteries.
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| 7. | If the separation is incomplete, the result is a " persistent truncus arteriosis ".
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| 8. | A failure of the aorticopulmonary septum to divide the great vessels results in persistent truncus arteriosus.
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| 9. | "Aortopulmonary window " also refers to a congenital heart defect similar in some ways to persistent truncus arteriosus.
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| 10. | As a septum develops between the two ventricles of the heart, two bulges form on either side of the truncus arteriosus.
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