The two kidneys are located in the abdomen, on either side of the midline, dorsal to the digestive organs and the peritoneum.  We have removed these organs and the peritoneum in this view.


The kidney is the primary excretory organ, responsible for extracting nitrogenous wastes (e.g, urea), ions, and foreign substances (like toxins or drugs) from the blood.

The kidneys also are critical to body fluid balance (osmoregulation) and thereby blood pressure regulation.


The ureters attach to the urinary bladder distal to the horizontal plastic tube.


Next: view the internal structure of the kidney here

Back to: Excretory system