Certified Surgical Technologist (CST) Practice Exam

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What is the main role of the ureters in the urinary system?

  1. Filtration of blood

  2. Storage of urine

  3. Transportation of urine to the bladder

  4. Production of urine

The correct answer is: Transportation of urine to the bladder

The main role of the ureters in the urinary system is the transportation of urine to the bladder. Each ureter is a muscular tube that carries urine produced by the kidneys down to the urinary bladder for storage. The ureters utilize peristaltic movements—wave-like contractions—to propel the urine in a one-way direction toward the bladder. This function is critical for maintaining proper urinary flow and preventing backflow into the kidneys. The function of filtration of blood is primarily carried out by the kidneys, which filter waste products and excess substances from the bloodstream to form urine. Storage of urine occurs in the bladder, where urine is held until it is excreted from the body. Additionally, the process of urine production also takes place in the kidneys, not the ureters. Therefore, the primary function of the ureters is specifically focused on the transportation aspect within the urinary system.

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