descending aorta
noun
: the part of the aorta from the arch to its bifurcation into the two common iliac arteries that passes downward in the thoracic and abdominal cavities
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“Descending aorta.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/descending%20aorta. Accessed 29 Nov. 2024.
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