Doctors can often see a large hiatus hernia on a chest x-ray. Otherwise, people are given barium in a liquid before x-rays are taken (barium swallow). The barium outlines the esophagus, making abnormalities easier to see. Hernias can also be seen during an upper endoscopy.
The kidneys filter the blood to remove wastes and produce urine. The ureters, urinary bladder, and urethra together form the urinary tract, which acts as a plumbing system to drain urine from the kidneys, store it, and then release it during urination.
The kidneys. Nitrogenous waste from the blood is excreted in the form of urine. Kidney In mammals, the kidneys and bladder are responsible for removing excess nitrogen in the â¦ form of Urea.  .he waste products must be cleaned up to blood waste then leaves  the body in the urine the digestive system and kidneys work  together to provide nutrients and remove.