Urine produced in the kidneys passes through _______ into the urinary bladder.

Urine produced in the kidneys pass through ureters into urinary bladder. Kidneys filter out waste products from the blood. Just as CO₂ is removed from the blood in the lungs, Nitrogenous wastes like urea or uric acid are removed from blood in the kidneys. This process is called excretion. Excretory system of human beings includes a pair of kidneys, a pair of ureters, a urinary bladder and a urethra. Kidneys are located in the abdomen, one on either side of the backbone. Urine produced in the kidneys passes through the ureters into the urinary bladder where it is released through the urethra. Ureters are the long tubes, which connect the kidneys with the urinary bladder. Urinary bladder is a muscular sac where urine is stored until the pressure of the expanded bladder leads to urge to pass it out through the urethra. Vena cava is a large vein, which brings blood from the various parts of body to the heart. Aorta is the largest artery and it arises from the left ventricle and supplies oxygenated blood (not in case of pulmonary artery) to various parts of body.