## **Core Concept**
The kidney receives its blood supply primarily from the renal arteries, which branch off from the abdominal aorta. The renal arteries then divide into segmental arteries, lobar arteries, arcuate arteries, and finally, interlobular arteries, which supply the nephrons. Understanding the renal blood supply is crucial for knowledge of renal function, blood pressure regulation, and the pathophysiology of various kidney diseases.

## **Why the Correct Answer is Right**
The correct answer, , implies that the statement regarding the blood supply to the kidney that is not true needs to be identified. Typically, the renal arteries arise directly from the aorta, and there are usually two renal arteries supplying each kidney. Variations can occur, but a key point is that the renal circulation is unique and crucial for filtration and function.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option would be incorrect because it likely states a true fact about renal blood supply, such as the origin of the renal arteries from the aorta or the presence of multiple renal veins.
- **Option B:** Similarly, this option would be incorrect as it probably presents another accurate aspect of renal circulation, like the branching of renal arteries within the kidney.
- **Option C:** This option might suggest an incorrect or less common anatomical variation that does not typically characterize the standard blood supply to the kidneys.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **about 20-25% of cardiac output** is directed to the kidneys, which is crucial for their role in filtration, electrolyte balance, and blood pressure regulation. Also, recall that **renal autoregulation** maintains a relatively constant renal blood flow over a wide range of blood pressures.

## **Correct Answer: C.**