Images of the kidney can be found on many websites including WebMD, MedicineNet, InnerBody and AllRefer Health. All of these sites offer images of the kidney that can be downloaded an unlimited number of times at no cost to the user.
The kidneys are responsible for filtering the blood from the heart before it is distributed to the remainder of the body. It also excretes waste from the body by producing urine, according to WebMD. People must have at least one functioning kidney to live. If something happens to both kidneys, it can be a fatal condition unless a transplant is received as soon as possible.