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Anatomy CVS Embryology a9b01eba

Which of the following embryonic aerial structures is most likely responsible for the origin of the patent ductus aeriosus?

A

Right fouh arch

B

Left fifth arch

C

Right fifth arch

D

Left sixth arch

High-Yield Explanation

Proximal pa of 6th arch aery - Pulmonary aery. Distal pa of left 6th arch aery - Ductus aeriosus.

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