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 (Latin: arterial ligament) is a small ligament that is the remnant of the ductus arteriosus formed within three weeks after birth.

The ligamentum attaches to the final part of the arch of aorta (the isthmus of aorta) and the first part of the descending aorta[1] The ligamentum is attached to the top of the left pulmonary artery.[2]

It is a ligament, a 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 behind 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. ^ Srichai, editors, David P. Naidich ... [et al.] ; contributing author, Monvadi B. (2007). Computed tomography and magnetic resonance of the thorax (4th ed.). Philadelphia: Wolters Kluwer/Lippincott Williams & Wilkins. p. 100. ISBN 9780781757652. 
  2. ^ D. Cheitlin, Melvin; C. Ursell, Philip (2011). "Cardiac Anatomy". In Chatterjee, Kanu. Cardiology: An Illustrated Textbook. JP Medical Ltd. p. 6. ISBN 9789350252758. 

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