[Ari Horesh]

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During the fetal stage an opening, the foramen ovale, exists in the septum between the two
atria. This allows blood to flow from the right atrium to the left atrium.
The opening should close during birth. If this fails to happen, which one of the following is
the main problem to the health of the baby?
A Blood in the aorta would not be fully oxygenated.
B The heart beat rate would decrease.
C The amount of blood pumped at each stroke would fall.
D The pulmonary vein would only contain deoxygenated blood.
E The volume of blood pumped to the lungs will increase.

Discussion

[Sonya Malan]

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A