where does the ligamentum arteriosum derive from
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.he 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.