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Pulmonary aorta in mammlian embryo commu...

Pulmonary aorta in mammlian embryo communicates with carotico-systemic aorta by a thin closes called ductus arteriosus which later closes and remains in adult as

A

Fossa -ovalis

B

Carotico pulmonary aperture

C

Ligamentum arteriosus

D

None of these

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