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The lowest blood concentration of nitrogenous waste occurs in the (a) hepatic vein, (b) inferior vena cava, (c) renal artery, (d) renal vein.
Introduction:
The urinary system or renal system is made up of kidneys, ureters, bladder and the urethra. All these organs are essential for the elimination of nitrogenous waste from the body. This system also regulate blood volume and blood pressure by controlling the levels of electrolytes and metabolites. Kidney consists of extensive blood supply through the renal arteries that leave the kidney via the renal vein. The concentration of the nitrogenous waste shows variation in different part of blood supply.
Answer to Problem 1MC
Correct answer:
Renal vein consists of the lowest blood concentration of nitrogenous waste.
Explanation of Solution
Explanation for the correct answer:
The veins that drain the kidney is known as renal veins. These veins connect the kidney to the inferior vena cava. The blood carried by these veins undergo filteration process in the kidney and consists the lowest amont of nitrogenous waste. Hence option (d) is the correct option.
Explanation for the incorrect answers:
Option (a) states that hepatic vein contains the lowest amount of nitrogenous waste. The hepatic vein transports the deoxygenated blood from the liver to the heart through the inferior vena cava. Hence this is an incorrect option.
Option (b) states that inferior vena cava contains the lowest amount of nitrogenous waste. Inferior vena cava is a large vein that carries deoxygenated blood from body into the right atrium of the heart. Hence this is an incorrect option.
Option (c) states that renal artery contains the lowest amount of nitrogenous waste. The renal artery supplies oxygenated blood to the kidneys, which is not filtered. Hence option (c) is an incorrect option.
Thus it is concluded that renal veins consists the lowest blood concentration of nitrogenous waste.
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