Fetal circulation differs from the circulatory path of the newborn infant. in utero, the fetus has a hole connecting the right and left atria of the heart. this allows oxygenated blood to quickly pass to the major organs of the body. what is this hole called

Patent foramen ovale (PFO)

Explanation:

The hole connecting the right and the left atria of the hear is called as the       " Patent foramen ovale (PFO) ".

The patent foramen ovale (PFO) allows the most red blood to flow from the right atrium to the left atrium  and after that to the left ventricle and then out the aorta. This helps the blood with most oxygen to go into the brain.

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