ureter

ureter (yu-re´ter, yu´re-ter) [NA]

The thick-walled tube that conducts the urine from the renal pelvis to the bladder; it consists of an abdominal part and a pelvic part, is lined with transitional epithelium surrounded by smooth muscle, both circular and longitudinal, and is covered externally by a tunica adventitia. [G. oureter, urinary canal]
curlicue u. term given to the radiographic appearance of an opacified u., herniated through the sciatic foramen; a very rare condition.
ectopic u. opens somewhere other than the bladder wall.
postcaval u. congenital defect where the right u. passes deep to the inferior vena cava on its descent to the bladder.
retrocaval u. in urography, the medial deviation of the right u. in the rare circumstance in which it passes behind the inferior vena cava before entering the pelvis.
retroiliac u. congenital defect where the u. passes deep to the iliac artery.

 

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