Ligamentum arteriosum

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Ligamentum arteriosum
The middle and posterior mediastina. Left side. (Lig. arteriosum labeled at upper right.)
Dog heart 2.jpg
Latin Ligamentum arteriosum
From left pulmonary artery
To descending aorta
Gray's p.545
TA A12.2.01.202
FMA 13421
Anatomical terminology

The ligamentum arteriosum (or arterial ligament) is a small ligament attached to the superior surface of the left pulmonary artery and the proximal descending aorta.[1] It is a nonfunctional vestige of the ductus arteriosus, and is formed within three weeks of birth.

The ligamentum arteriosum is closely related to the left recurrent laryngeal nerve, a branch of the left vagus nerve. After splitting from the left vagus nerve, the left recurrent laryngeal loops around the aortic arch posterior to the ligamentum arteriosum, after which it ascends to the larynx.

This ligament also plays a role in major trauma; it fixes the aorta in place during rapid decelerations recoil, consequently potentially resulting in ruptured aorta.

See also[edit]


  1. ^ D. Cheitlin, Melvin; C. Ursell, Philip (2011). "Cardiac Anatomy". In Chatterjee, Kanu. Cardiology: An Illustrated Textbook. JP Medical Ltd. p. 6. ISBN 9789350252758. 

External links[edit]