Florida State Paramedic Practice Exam

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What is typically the oxygenation structure within the umbilical cord?

1 artery and 1 vein
2 arteries
2 veins and 1 artery
2 arteries and 1 vein

The correct answer is: 2 arteries and 1 vein

The oxygenation structure within the umbilical cord consists of two arteries and one vein. This configuration is essential for fetal circulation. Specifically, the two umbilical arteries carry deoxygenated blood from the fetus to the placenta, where carbon dioxide and waste products are exchanged for oxygen and nutrients. The single umbilical vein, on the other hand, transports oxygen-rich blood back to the fetus from the placenta. This arrangement supports the developing fetus by ensuring it receives the necessary oxygen and nutrients while removing waste. Understanding this structure is crucial for anyone involved in neonatal care and paramedic training, as it relates directly to how the fetal circulatory system operates before birth.