ureter
Ureter (Latin: Ureter) is located in the peritoneal external slender muscle duct, left and right one, about the upper edge of the second lumbar from the renal pelvis, and finally the bladder. About 20 to 30 cm, the average diameter of 0.5 to 1.0 cm, the narrowest diameter of only 0.2 to 0.3 cm. The main function of the ureter is the excretion of urine from the kidneys into the bladder. Ureter can be divided into upper, middle and lower three sections, also known as abdominal segment, pelvic, bladder segment (inner wall). Urethra of the ureter began in the bottom of the renal pelvis, in the posterior abdominal peritoneal deep, by the psoas muscle down to the front of its point, and testicular blood vessels (male) or ovarian vascular cross, usually in front of blood vessels walking, small pelvis Entrance. Here, the left ureter crosses the anterior end of the left common iliac artery; the right ureter passes through the anterior part of the right external iliac artery. From the small pelvis at the entrance, from the iliac blood vessels into the pelvic cavity, the first along the pelvic wall down, through the pelvic wall and internal iliac blood vessels, lumbosacral sac and sacroiliac joint down, across the obturator nerve vascular bundle Sciatic spine level, this paragraph is called basin. Male ureter to the front, inside and below the rectum between the anterolateral wall and the posterior wall of the bladder, in the vas deferens behind and cross, from the bladder outside the upper corner into the bladder wall. Female ureter is about 2 on the outside of the cervix.