View Table of Contents
- Kidney failure facts
- What are the kidneys?
- What are the kidneys? (Continued)
- What causes kidney failure?
- What causes kidney failure? (Continued)
- What are the signs and symptoms of kidney failure?
- How is kidney failure diagnosed?
- What is the treatment for kidney failure?
- Peritoneal dialysis
- Kidney transplantation
- What is the prognosis for someone with kidney failure?
What are the kidneys?
The kidneys play key roles in body function, not only by filtering the blood and getting rid of waste products, but also by balancing the electrolyte levels in the body, controlling blood pressure, and stimulating the production of red blood cells.
The kidneys are located in the abdomen toward the back, normally one on each side of the spine. They get their blood supply through the renal arteries directly from the aorta and send blood back to the heart via the renal veins to the vena cava. (The term "renal" is derived from the Latin name for kidney.)
The kidneys have the ability to monitor the amount of body fluid, the concentrations of electrolytes like sodium and potassium, and the acid-base balance of the body. They filter waste products of body metabolism, like urea from protein metabolism and uric acid from DNA breakdown. Two waste products in the blood usually are measured; 1) blood urea nitrogen (BUN), and 2) creatinine (Cr).