The ureters are thin-walled muscular tubes that convey urine from the kidneys to the urinary bladder. They have three parts: the pelvic, abdominal, and pelvic parts. The ureters begin in the renal pelvis in the kidneys and travel downwards and medially through the abdomen and pelvis before piercing the bladder wall and opening into the bladder trigone. Their course and relations are described.
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