The ureters are two thick tubes which act to transport urine from the kidney to the bladder. They are 25cm long, and are situated bilaterally, with one ureter draining each kidney. The ureter The ureter emerges from the hilum of the kidney and runs vertically downwards on the psoas fascia that covers the anterior surface of the psoas major muscle and remains in the retroperitoneal space throughout its course (see Figure 1). Each ureter is a 25- to 30-cm (in the adult) muscular tube that connects the renal pelvis to the urinary bladder. For descriptive convenience the ureter may be said to have two segments of approximately equal length, namely: 1) an abdominal segment ... Ureter is a part of the human excretory system that transports urine through the kidney to the urinary bladder. ureter, duct that transmits urine from the kidney to the bladder. There normally is one ureter for each kidney. Each ureter is a narrow tube that is about 12 inches (30 cm) long. A ureter has thick contractile walls, and its diameter varies considerably at different points along its length.
