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 body produces pee as a way to get rid of waste and extra water that it doesn't need. Before leaving your body, urine travels through the urinary tract. The urinary tract is a pathway that includes the: 1  kidneys: two bean-shaped organs that filter waste from the blood and produce urine. 2  ureters: two thin tubes that take pee from the kidney to the bladder. 3  bladder: a sac that holds pee until it's time to go to the bathroom.