sinus of Valsalva
noun
sinus of Val·sal·va
-väl-ˈsäl-və 
: any one of the pouches of the aorta and pulmonary artery which are located behind the flaps of the semilunar valves and into which the blood in its regurgitation toward the heart enters and thereby closes the valves
called also aortic sinus
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“Sinus of Valsalva.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/sinus%20of%20Valsalva. Accessed 22 Nov. 2024.
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