The document is a 10 question quiz about human kidneys. It covers topics like kidney location, size, functions, risks of kidney disease, and ways to keep kidneys healthy. The kidneys filter around 200 liters of blood daily and are located in the back below the rib cage, about the size of a fist. High blood pressure, diabetes and family history can increase risks of kidney disease, which currently affects over 26 million US adults and may require dialysis or transplant if the kidneys fail.