Why are the renal artery and vein critical to the process of osmoregulation in vertebrates?

Why are the renal artery and vein critical to the process of osmoregulation in mammals? a.) The renal artery and vein are the main pathways regulating how much is produced by the kidneys b.) The kidneys require a constant and abnormally high oxygen supply to function c.) The kidneys require higher-than-normal levels of hormones d.) The renal artery delivers blood with nitrogenous waste to the kidney, and the renal vein brings blood with less nitrogenous wastes away from the kidneys


The renal artery and renal vein are critical in osmoregulation in mammals because CORRECT ANSWER IS D) THE RENAL ARTERY DELIVERS BLOOD WITH NITROGENOUS WASTE TO THE KIDNEY , AND THE RENAL VEIN BRINGS BLOOD WITH LESS NITROGENOUS WASTES AWAY FROM THE KIDNEYS EXPLANATION EFFERENT BLOOD VESSEL DISTAL CONVULATED TUBULE (OCT) GLOMERULUS PROXIMAL CONDUGATED TUBULE CUBODIAL (PCT) (SIMPLE CELLS TO De The kidneys are an important organ for the elimination of nitrogenous waste and production of urine. Along with this they help in Osmoregulation. The left and right renal arteries supply oxygenated blood to the kidneys which are a branch from the abdominal aorta. The left and right renal vein carries deoxygenated blood that leaves the kidneys to enter the inferior vena cava. Inside each kidney, the renal arteries branch into smaller and smaller parts until they break into capillaries to filter in the nephrons. Each nephron has a small sac of capillaries called as the glomerulus. These capillaries have a high pressure which allow filtration of blood through the glomerulus of the bowman’s capsule. This process is called as ultrafiltration. Now, the filtered blood along with water, urea, nitrogenous waste and salts through the renal tubule for reabsorption. Maximum water and salts are reabsorbed and the nitrogenous wastes such as urea, uric acid, creatinine along with some amount of water is eliminated out in the form of urine. Once the kidneys have performed the cleansing function, the filtered deoxygenated blood leaves the kidney through the renal vein moving up to the inferior vena cava and returning to the heart.

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