Ligamentum Arteriosum - Wikipedia

Ligament of the torso

Arterial bunch
The middle and posterior mediastina. Left side. (Lig. arteriosum labeled at upper right.)
Heart of dog. left ventricle anterior interventricular sulcus right ventricle conus arteriosus pulmonary artery Ligamentum arteriosum aortic arch brachiocephalic artery left subclavian artery right auricle left auricle fat pulmonary vein
Details
From	Left pulmonary artery
To	Descending aorta
Identifiers
Latin	ligamentum arteriosum
TA98	A12.2.01.202
TA2	4092
FMA	13421
Anatomical terminology[edit on Wikidata]

The ligamentum arteriosum (arterial ligament), also known as Botallo's ligament, Harvey's ligament, and Botallo's duct,[1] is a small ligament attaching the aorta to the pulmonary artery.[clarification needed] It serves no function in adults but is the remnant of the ductus arteriosus formed within three weeks after birth.[clarification needed]

Structure

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At the superior end, the ligamentum attaches to the aorta—at the final part of the aortic arch (the isthmus of aorta) or the first part of the descending aorta.[2] On the other, inferior end, the ligamentum is attached to the top of the left pulmonary artery.[3]

The ligamentum arteriosum is closely related to the left recurrent laryngeal nerve, a branch of the left vagus nerve.[4] After splitting from the left vagus nerve, the left recurrent laryngeal loops around the aortic arch behind the ligamentum arteriosum, after which it ascends to the larynx.[4]

Function

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In adults, the ligamentum arteriosum has no useful function. It is a vestige of the ductus arteriosus, a temporary fetal structure that shunts blood from the pulmonary arteries to the aorta. This significantly reduces the volume of blood circulating through the lungs, which are inactive in the womb. 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.

Clinical significance

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The ligamentum arteriosum plays a role in major trauma. It fixes the aorta in place during abrupt motions, consequently potentially resulting in a ruptured aorta. Such ruptures are very rare.

If the ductus arteriosus fails to close after birth, a condition known as patent ductus arteriosus can develop. This is a fairly common birth defect. Sufferers may have operations that leave them with no ligamentum arteriosum.

See also

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• Ligamentum teres
• Ligamentum venosum

References

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1. ^ Pirie, Egle (February 28, 2022). "Ligamentum arteriosum and ductus arteriosus". Kenhub. Retrieved March 12, 2022.
2. ^ Monvadi B. Srichai (2007). David P. Naidich; et al. (eds.). Computed tomography and magnetic resonance of the thorax (4th ed.). Philadelphia: Wolters Kluwer/Lippincott Williams & Wilkins. p. 100. ISBN 978-0-7817-5765-2.
3. ^ D. Cheitlin, Melvin; C. Ursell, Philip (2011). "Cardiac Anatomy". In Chatterjee, Kanu (ed.). Cardiology: An Illustrated Textbook. JP Medical Ltd. p. 6. ISBN 978-93-5025-275-8.
4. ^ a b Goodin, Douglas S. (2014-01-01), Aminoff, Michael J.; Josephson, S. Andrew (eds.), "Chapter 2 - Neurologic Complications of Aortic Disease and Surgery", Aminoff's Neurology and General Medicine (Fifth Edition), Boston: Academic Press, pp. 25–48, doi:10.1016/b978-0-12-407710-2.00002-3, ISBN 978-0-12-407710-2, S2CID 78356226, retrieved 2020-11-14

External links

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• Anatomy photo:21:st-1200 at the SUNY Downstate Medical Center

v t e Fetal vascular remnant ligaments
Heart	Ligamentum arteriosum
Liver	Round ligament of liver Ligamentum venosum
Umbilical	Medial umbilical ligament see also Median umbilical ligament and Lateral umbilical fold

v t e Arteries of the torso and chest
Lungs	Pulmonary artery Right Left (Ligamentum arteriosum)
Heart	Coronary circulation Right coronary: SA nodal AV nodal Atrial Right marginal Posterior descending Left coronary: Left anterior descending Left circumflex (Left marginal)
Aorta	Sections Ascending aorta Aortic arch Descending aorta Thoracic aorta Abdominal aorta Aortic body Aortic arch Brachiocephalic Thyreoidea ima Right subclavian Right common carotid Leftcommon carotid External carotid Internal carotid Carotid body Carotid sinus Carotid bifurcation Leftsubclavian Internal thoracic: Anterior intercostal Thymic Pericardiacophrenic Perforating branches terminal (Musculophrenic, superior epigastric) Costocervical trunk: Highest intercostal (Posterior intercostal 1–2) Deep cervical Descendingaorta visceral: Bronchial Esophageal Mediastinal parietal: Posterior intercostal 3–11 Subcostal Superior phrenic

Authority control databases	Terminologia Anatomica