单词	aortic arch
释义	aortic arch noun 1 : one of the arterial branches in vertebrate embryos that exist in a series of pairs with one on each side of the embryo, connect the ventral arterial system lying anterior to the heart to the dorsal arterial system above the digestive tract, and persist in adult fishes but are reduced or much modified in the adult of higher forms 2 : arch of the aorta Example Sentences Recent Examples on the Web But because Caleb had a rare defect known as an interrupted aortic arch, oxygenated blood flow to his body was being choked off as the duct began to seal itself. Pam Kragen, San Diego Union-Tribune, 22 Sep. 2020 The team suspects that the animal’s stretchy aortic arch, part of the main artery entering the heart, continues to slowly contract between heartbeats, maintaining blood flow to the animal’s body. Jason Daley, Smithsonian, 19 Nov. 2019 In 2012, a 76-year-old Connecticut doctor had surgery to repair a life-threatening bulge in his aortic arch—the hulking bend that hooks the massive artery around the heart, routing oxygenated blood both upward and downward. Beth Mole, Ars Technica, 20 Mar. 2018 The study is based off the case of a 76-year-old man who underwent surgery for his aortic arch, a part of the main artery around the heart. Josh Magness, miamiherald, 21 Mar. 2018 Word History First Known Use 1802, in the meaning defined at sense 1 Medical Definition aortic arch noun 1 : one of the arterial branches in vertebrate embryos that exist in a series of pairs with one on each side of the embryo, that connect the ventral arterial system lying anterior to the heart to the dorsal arterial system above the digestive tract, and that persist in adult fishes but are reduced or much modified in the adult of higher forms 2 : arch of the aorta
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