In humans, the kidneys are two reddish-brown bean-shaped blood-filtering organs that are a multilobar, multipapillary form of mammalian kidneys, usually without signs of external lobulation. They are
Normal adult right kidney as seen on abdominal ultrasound with a pole to pole measurement of 9.34 cm
A CT scan of the abdomen showing the position of the kidneys. The left cross-section in the upper abdomen shows the liver on the left side of scan (right side of body). Center: cross-section showing the kidneys below the liver and spleen. Right: further cross-section through the left kidney.
Image showing the structures that the kidney lies near
Cross-section through a cadaveric specimen showing the position of the kidneys
The ureters are tubes composed of smooth muscle that transport urine from the kidneys to the urinary bladder. In adult humans, the ureters are typically 20–30 centimeters long and 3–4 millimeters in d
Microscopic cross-section of the ureter, showing the epithelium (purple cells) sitting next to the lumen. A large amount of muscle fibres can be seen surrounding the epithelium, and the adventitia sits beyond this.
Kidney stones. One entire stone (the bigger one) and another one fragmented in small pieces after extracorporeal shock wave lithotripsy