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.
ï· Excretion â The removal of metabolic waste from the body ï· Metabolic waste â any substance made by metabolism that is toxic or made in excess ï· Metabolism â The sum total of all cell reactions Explain the importance of removing metabolic wastes, including carbon dioxide and nitrogenous waste, from the body.