• Fibromuscular tube which conveys urine from the kidney to the bladder.
  CRISP Thesaurus
  National Institutes of Health, 2006
• One of a pair of thick-walled tubes that transports urine from the KIDNEY PELVIS to the URINARY BLADDER.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2025
• Organ with organ cavity which connects the renal sinus to the urinary bladder. Examples: There are only two ureters, the right and the left ureters.
  Digital Anatomist
  University of Washington, 2003
• Organ with organ cavity, each instance of which connects some renal sinus to some urinary bladder. Examples: There are only two ureters, the right and the left ureters.
  Foundational Model of Anatomy
  University of Washington, 2017
• The thick-walled tube that carries urine from each kidney to the bladder.
  NCI
  U.S. National Cancer Institute, 2021
• The tube that carries urine from the kidney to the bladder.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• The tube that connects each kidney to the bladder.
  Harvard Dictionary of Health Terms
  Harvard Medical Publishing, 2011
• The tube that extends from each kidney to the urinary bladder.
  CDISC Terminology
  Clinical Data Interchange Standards Consortium (CDISC), 2021
• The ureters are muscular tubes--about 16 inches (40 centimeters) long--that attach at their upper end to the kidneys and at their lower end to the bladder.
  Merck Manuals
  Merck & Co., Inc., 2025
• The ureters are paired muscular ducts with narrow lumina that carry urine from the kidneys to the bladder. An understanding of the anatomic relations of the ureters is critical to the practice of urology, as well as to the disciplines of gynecologic, vascular, and general surgery.
  Medscape
  WebMD, 2025
• 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. The...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2025