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The ligamentum arteriosum ((ラテン語: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 The ligamentum is attached to the top of the left pulmonary artery. 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== * Patent ductus arteriosus 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「ligamentum arteriosum」の詳細全文を読む スポンサード リンク
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