: any of the large veins by which in air-breathing vertebrates the blood is returned to the right atrium of the heart

You are watching: Vena cava is a latin singular noun, and its plural is venae cavae.

vena caval ˌvē-​nə-​ˈkā-​vəl
Recent Examples on the Web These drain into the inferior vena cava, which is a direct line to the heart. — New York Times, 19 Aug. 2021 Four openings were designed to lead to the aorta, the vena cava, the pulmonary artery, and the pulmonary vein; a cable connected it to a black dictionary-size control box. — Joshua Rothman, The New Yorker, 1 Mar. 2021 The bullet struck Oswald’s aorta and a large torso vein known as the inferior vena cava, Dr. McClelland said, causing extensive blood loss. — Richard Sandomir, New York Times, 24 Sep. 2019 The inferior vena cava and superior vena cava carry blood to the heart. — Scott Springer, Cincinnati.com, 1 Nov. 2017 The medical mystery Layne Todd was born without an inferior vena cava. — Scott Springer, Cincinnati.com, 1 Nov. 2017 However the blood flow and diameter of the inferior vena cava were reduced when lying on their backs. — Amanda Ross-white, CNN, 16 Oct. 2017 This takes pressure off of your inferior vena cava, a large vein that carries deoxygenated blood from your lower and middle body into the right atrium of the heart, and may help reduce swelling. — Korin Miller, SELF, 21 Sep. 2017 It would be connected to the patient’s vena cava—a large vein carrying blood into the heart—through a cannula, or tube, inserted in the jugular vein in the throat. — Randy Rieland, Smithsonian, 7 Apr. 2017

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History and Etymology for vena cava

borrowed from Medieval Latin vēna cava, literally, "hollow vein," translation of Greek phlèps koílē