The ductus aeriosus is derived from the following aoic arch: (A) 3rd, (B) 4th, (C) 5th, (D) 6th
Answer is D. The pa of the left sixth arch aery, between the branch to the lung bud and aoa,forms the ductus aeriosus HUMAN EMBRYOLOGY-INDERBIR SINGH TENTH EDITION-PAGE NO:255