Ligament: Ligamentum arteriosum
The middle and posterior mediastina. Left side. (Lig. arteriosum labeled at upper right.)
Heart of dog. 1. left ventricle 2. anterior interventricular sulcus 3. right ventricle 4. conus arteriosus 5. pulmonary artery 6. Ligamentum arteriosum 7. aortic arch 8. brachiocephalic artery 9. left subclavian artery 10. right auricle 11. left auricle 12. fat 13. pulmonary vein
Gray's	subject #141 545
From	pulmonary artery
To	aortic trunk
Dorlands/Elsevier	l_09/12491658

The ligamentum arteriosum (or arterial ligament) is a small ligament attached to the superior surface of the pulmonary trunk and the inferior surface of the aortic arch. 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 ligamentum arteriosum, after which it courses posterior to the aortic arch and ascends to the larynx.

[edit] See also

• Patent ductus arteriosus

formed from from patent ductus arteriousus

[edit] External links

• 610992187 at GPnotebook
• SUNY Labs 21:st-1200

v • d • e Fetal vascular remnant ligaments (GA 6) Heart Ligamentum arteriosum Liver Round ligament of liver · Ligamentum venosum Umbilical Medial umbilical ligament (see also Median umbilical ligament and Lateral umbilical fold)

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