Which of the following is a remnant of ductus aeriosus?
On the right, when the distal pa of the sixth aoic arch and the fifth aoic arch disappear, the recurrent laryngeal nerve moves up and hooks around the right subclan aery. On the left, the nerve does not move up, since the distal pa of the sixth aoic arch persists as the ductus aeriosus, which later forms the ligamentum aeriosum Ref: Langman's embryology 11th edition Chapter 12.
Ligamentum aeriosum
Ligamentum teres
Both of the above
None of the above