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  2. Superior vena cava - Wikipedia

    en.wikipedia.org/wiki/Superior_vena_cava

    The superior vena cava (SVC) is the superior of the two venae cavae, the great venous trunks that return deoxygenated blood from the systemic circulation to the right atrium of the heart. It is a large-diameter (24 mm) short length vein that receives venous return from the upper half of the body, above the diaphragm .

  3. Venae cavae - Wikipedia

    en.wikipedia.org/wiki/Venae_cavae

    In anatomy, the venae cavae (/ ˈ v iː n i ˈ k eɪ v i /; [1] sg.: vena cava / ˈ v iː n ə ˈ k eɪ v ə /; from Latin 'hollow veins') [2] are two large veins (great vessels) that return deoxygenated blood from the body into the heart. In humans they are the superior vena cava and the inferior vena cava, and both empty into the right atrium ...

  4. Azygos vein - Wikipedia

    en.wikipedia.org/wiki/Azygos_vein

    The azygos vein transports deoxygenated blood from the posterior walls of the thorax and abdomen into the superior vena cava.. It is formed by the union of the ascending lumbar veins with the right subcostal veins at the level of the 12th thoracic vertebra, ascending to the right of the descending aorta and thoracic duct, passing behind the right crus of diaphragm, anterior to the vertebral ...

  5. Persistent left superior vena cava - Wikipedia

    en.wikipedia.org/wiki/Persistent_left_superior...

    The left superior vena cava is not shown in this image. In anatomy , a persistent left superior vena cava is the most common variation of the thoracic venous system . [ 1 ] [ 2 ] It is present in between 0.3% and 0.5% of the population, [ 3 ] [ 4 ] [ 5 ] and is an embryologic remnant that results from a failure to involute .

  6. File:Diagram of the human heart (cropped).svg - Wikipedia

    en.wikipedia.org/wiki/File:Diagram_of_the_human...

    Add cardiac skeleton. Inferior vena cava more wide. Add aorta in bottom. Add source veins of superior vena cava. Brachiocephalic trunk more wide and separated. Added shadows. Left main pulmonary artery with its first division. 07:02, 2 June 2006: 650 × 650 (26 KB) Yaddah: Diagram of the human heart, created by Wapcaplet in Sodipodi. Cropped by ...

  7. Fold of left vena cava - Wikipedia

    en.wikipedia.org/wiki/Fold_of_left_vena_cava

    It is formed by the folding of the serous layer over the remnant of the lower part of the left superior vena cava (duct of Cuvier), which becomes obliterated during fetal life, and remains as a fibrous band stretching from the highest left intercostal vein to the left atrium, where it is continuous with a small cardiac vein, the vein of the ...

  8. Circulatory system - Wikipedia

    en.wikipedia.org/wiki/Circulatory_system

    Oxygen-deprived blood from the superior and inferior vena cava enters the right atrium of the heart and flows through the tricuspid valve (right atrioventricular valve) into the right ventricle, from which it is then pumped through the pulmonary semilunar valve into the pulmonary artery to the lungs.

  9. Internal thoracic vein - Wikipedia

    en.wikipedia.org/wiki/Internal_thoracic_vein

    The internal thoracic vein can act as a collateral circulation for blood from the inferior vena cava to the superior vena cava. [7] This can work in either direction. [7] It may partially compensate for disturbances to blood flow. [7]