It gives rise to the left recurrent laryngeal nerve, which hooks around the aortic arch to the left of the ligamentum arteriosum and ascends between the trachea and esophagus.
12.
The ductus arteriosus becomes the ligamentum arteriosum within three weeks of birth, so that deoxygenated blood can be selectively circulated to the lungs for more efficient oxygenation of the blood.
13.
After pulling the left lung aside, the layer ( mediastinal pleura ) above the left arch is incised and the left arch and the ligamentum arteriosum are dissected out and separated from the surrounding structures.
14.
Above, it is connected to the concavity of the proximal descending aorta by the ligamentum arteriosum, on the left of which is the left recurrent nerve, and on the right the superficial part of the cardiac plexus.
15.
The vast majority of aortic dissections originate with an intimal tear in either the ascending aorta ( 65 % ), the aortic arch ( 10 % ), or just distal to the ligamentum arteriosum in the descending thoracic aorta ( 20 % ).
16.
On the right side, the artery of Arch 6 is obliterated while, on the left side, the artery persists as the ductus arteriosus; circulatory changes immediately following birth cause the vessel to close down, leaving a remnant, the ligamentum arteriosum.
17.
Tamponade occurs frequently in car crashes because the ligament ( the ligamentum arteriosum ) which connects two large blood vessels just above the heart often rips a hole in one of those vessels when the heart itself jerks out of place at the moment of impact.
18.
The " ductus arteriosus " normally closes within one or two days of birth, leaving the " ligamentum arteriosum ", while the umbilical vein and " ductus venosus " usually closes within two to five days after birth, leaving, respectively, the liver's " ligamentum teres " and " ligamentum venosus ".
