The foramen ovale, a hole between the right and left atria, closes after birth. In the fetus, it directs blood from the right to the left atrium because the lungs are not yet functioning to oxygenate the blood.
Fعرفa's ovate, un trou dans le septum entre l'oreillette droite et gauche, se ferme après la naissance. Chez le fœtus, il permet au sang de passer directement de l'oreillette droite à l'oreillette gauche car les poumons ne fonctionnent pas encore et ne peuvent pas oxygéner le sang.
| Front | One of these changes is that the foramen ovale, a hole in the septum between the right and left atria, closes. In the fetus, the foramen ovale allows blood to flow directly from the right atrium to the left atrium. Suggest why the foramen ovale is open in the fetus before birth. |
|---|---|
| Back | fetus lungs not functioning, so blood cant be oxygenated |
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