The lowest blood concentration of nitrogenous waste occurs in the a. hepatic vein, b. inferior vena cava, c. renal artery, d. renal vein.

Verified step by step guidance

1. Understand that nitrogenous waste is primarily removed from the blood by the kidneys.
2. Recognize that the renal artery carries blood to the kidneys, where filtration occurs.
3. Identify that the renal vein carries blood away from the kidneys after filtration.
4. Consider that the hepatic vein and inferior vena cava are not directly involved in the filtration of nitrogenous waste.
5. Conclude that the blood in the renal vein has the lowest concentration of nitrogenous waste after filtration in the kidneys.

Key Concepts

Nitrogenous Waste

Nitrogenous waste refers to the byproducts of protein metabolism, primarily urea, creatinine, and uric acid, which are produced in the liver and excreted by the kidneys. Understanding the formation and elimination of these wastes is crucial for comprehending their concentrations in various blood vessels.

Renal System

The renal system, or urinary system, includes the kidneys, ureters, bladder, and urethra, and is responsible for filtering blood, removing waste, and regulating fluid balance. The kidneys play a key role in maintaining homeostasis by adjusting the concentration of nitrogenous wastes in the blood.

Blood Circulation

Blood circulation involves the movement of blood through the heart and blood vessels, including arteries and veins. The hepatic vein carries blood from the liver, while the renal artery and renal vein are involved in blood flow to and from the kidneys, making their understanding essential for determining where nitrogenous waste concentrations are lowest.