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When a newborn takes its first breath, what physical changes occur in the heart to increase oxygenation of the infant’s blood?
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When a newborn takes its first breath, what physical changes occur in the heart to increase oxygenation of the infant’s blood?

User Heyji
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When a newborn takes its first breath, what physical changes occur in the heart to increase oxygenation of the infant's blood? A) The ductus arteriosus expands to allow more blood to enter the lungs.
User Wendel
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