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The renal veins in the renal circulation, are large-calibre [1] veins that drain blood filtered by the kidneys into the inferior vena cava. There is one renal vein draining each kidney. [citation needed] . Each renal vein is formed by the convergence of the interlobar veins of one kidney. [2]
- venae renales
- inferior vena cava
Renal vein thrombosis (RVT) is the formation of a clot in the vein that drains blood from the kidneys, ultimately leading to a reduction in the drainage of one or both kidneys and the possible migration of the clot to other parts of the body.
- Blood clot in the renal vein
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A recessed area on the concave border is the renal hilum, where the renal artery enters the kidney and the renal vein and ureter leave. The kidney is surrounded by tough fibrous tissue, the renal capsule , which is itself surrounded by perirenal fat , renal fascia , and pararenal fat .
Renal circulation - Wikipedia. Contents. hide. (Top) Structure. Arterial system. Segmental arteries. Venous system. See also. References. External links. Renal circulation. The renal circulation supplies the blood to the kidneys via the renal arteries, left and right, which branch directly from the abdominal aorta.
The signs and symptoms of NCS are all derived from the outflow obstruction of the left renal vein. The compression causes renal vein hypertension, leading to hematuria (which can lead to anemia) and abdominal pain (classically left flank or pelvic pain).
- Nutcracker phenomenon, renal vein entrapment syndrome, mesoaortic compression of the left renal vein
Veins ( / veɪn /) are blood vessels in the circulatory system of humans and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are those of the pulmonary and fetal circulations which carry oxygenated blood to the heart.
Renal plasma flow is the volume of plasma that reaches the kidneys per unit time. Renal plasma flow is given by the Fick principle : This is essentially a conservation of mass equation which balances the renal inputs (the renal artery) and the renal outputs (the renal vein and ureter ).
