| 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 |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Describe components tobacco smoke affect cardiovascular system smokers
Previous card: Blood contraction suggest explain effect supraventricular tachycardia flow
Up to card list: OCR A Biology