Which of the following carries blood from the heart to the kidneys?

Renal artery

The correct answer is Option (4) – Renal artery

Blood vessels, including arteries and veins, serve as conduits for transporting oxygenated and deoxygenated blood throughout the body.

In the context of the renal system:

• Renal arteries supply oxygenated blood to the kidneys, facilitating the filtration process that eliminates various nitrogenous wastes from the blood.
• Deoxygenated blood is then carried away from the kidneys through the right and left renal veins.
• These renal veins connect to the inferior vena cava, ultimately returning the deoxygenated blood to the heart.

It's important to note that the deoxygenated blood flowing through the renal veins has undergone filtration in the kidneys, reducing the nitrogenous metabolic waste content.