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Renal portal system. A renal portal system is a portal venous system found in reptiles, and fish excluding hagfish and lampreys. It is not found in mammals. [1] Its function is to supply blood to renal tubules when glomerular filtration is absent or downregulated. [2]
In the circulatory system of vertebrates, a portal venous system occurs when a capillary bed pools into another capillary bed through veins, without first going through the heart. Both capillary beds and the blood vessels that connect them are considered part of the portal venous system. Most capillary beds drain into venules and veins which ...
D012079. Anatomical terminology. [ edit on Wikidata] The renal circulation supplies the blood to the kidneys via the renal arteries, left and right, which branch directly from the abdominal aorta. Despite their relatively small size, the kidneys receive approximately 20% of the cardiac output. [1]
Portal hypertension is a condition in which the blood pressure of the portal venous system is too high. It is often the result of cirrhosis of the liver. Liver cirrhosis can lead to increased intrahepatic vascular resistance and vasodilation of portal system arteries, both of which increase pressure in the portal vein.
Not to be confused with Human kidney. The kidneys are a pair of organs of the excretory system in vertebrates, which maintain the balance of water and electrolytes in the body ( osmoregulation ), filter the blood, remove metabolic waste products, and, in many vertebrates, also produce hormones (in particular, renin) and maintain blood pressure.
FMA. 14334. Anatomical terminology. [ edit on Wikidata] 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.
The purpose of the urinary system is to eliminate waste from the body, regulate blood volume and blood pressure, control levels of electrolytes and metabolites, and regulate blood pH. The urinary tract is the body's drainage system for the eventual removal of urine. [1] The kidneys have an extensive blood supply via the renal arteries which ...
Loop of Henle. In the kidney, the loop of Henle ( English: / ˈhɛnli /) (or Henle's loop, Henle loop, [1] nephron loop [2] or its Latin counterpart ansa nephroni) is the portion of a nephron that leads from the proximal convoluted tubule to the distal convoluted tubule. Named after its discoverer, the German anatomist Friedrich Gustav Jakob ...
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