inferior vena cava
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Related to inferior vena cava: tricuspid valve, carotid artery, abdominal aorta, aorta, pulmonary artery, pulmonary valve, pulmonary vein, portal vein
vena[ve´nah] (pl. ve´nae) (L.)
vein (see also Appendix 2-6).
inferior vena cava the venous trunk for the lower extremities and the pelvic and abdominal viscera; it empties into the right atrium of the heart. See Appendix 2-6.
superior vena cava the venous trunk draining blood from the head, neck, upper extremities, and chest; it empties into the right atrium of the heart. See Appendix 2-6.
inferior vena cava
the large vein that returns deoxygenated blood to the heart from parts of the body below the diaphragm. It is formed by the junction of the two common iliac veins to the right of the fifth lumbar vertebra and ascends along the vertebral column, pierces the diaphragm, and opens into the right atrium of the heart. As it passes through the diaphragm, it receives a covering of serous pericardium. The inferior vena cava contains a semilunar valve that is rudimentary in the adult but very large and important in the fetus. The vessel receives blood from the two common iliacs, the lumbar veins, and the testicular veins. Compare superior vena cava.
in·fer·i·or ve·na ca·va(IVC) (in-fēr'ē-ŏr vē'nă kā'vă)
Receives the blood from the lower limbs and the greater part of the pelvic and abdominal organs; it begins at the level of the fifth lumbar vertebra on the right side by the merger of the right and left common iliac veins, pierces the diaphragm at the level of the eighth thoracic vertebra, and empties into the posteroinferior aspect of the right atrium of the heart.
inferior vena cavaThe largest vein in the body, carrying blood from the lower half of the body to the right atrium of the heart. See also SUPERIOR VENA CAVA.
Inferior vena cava
The biggest vein in the body, returning blood to the heart from the lower half of the body.