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venae cavae
The venae cavae (from the Latin for "hollow veins", singular "vena cava") are large veins (venous trunks) that return deoxygenated blood from the body into the heart. In humans they are called the superior vena cava and the inferior vena cava, and both empty into the right atrium.〔(vena cava ). ''Dictionary.com''. Retrieved 19 September 2013.〕 The inferior vena cava (or caudal vena cava in some animals) travels up alongside the abdominal aorta with blood from the lower part of the body. It is the largest vein in the human body.〔(What is the largest vein in the human body? ). ''MadSci Network: Anatomy''. Retrieved 19 September 2013.〕 The superior vena cava (or cranial vena cava in animals) is above the heart, and forms from a convergence of the left and right brachiocephalic veins, which contain blood from the head and the arms. ==Pronunciation== Origin: 1590–1600; New Latin ''vena cava'' (sg), ''venae cavae'' (pl), 'hollow vein/veins'. Although the classical Latin pronunciation of ''venae cavae'' would be approximately , the standard English medical pronunciation is .
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