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ADA NBDE National Board Dental Part I

Category - NBDE

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Regarding fetal circulation, oxygenated blood bypasses pulmonary circulation by communication from which of the following:

Left atrium to left ventricle
Left atrium to right atrium
Right atrium to right ventricle
Right atrium to left atrium

Explanation

Answer: D - Oxygenated blood bypasses pulmonary circulation by communication in the fetal heart called the foramen ovale. This opening connects the right atrium to the left atrium.

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ADA NBDE National Board Dental Part I

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ADA NBDE National Board Dental Part I

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