What is the primary function of the ureter in the urinary tract?

The primary function of the ureter in the urinary tract is to transport urine from the kidney to the bladder. Each kidney produces urine, which is then drained into the ureters. These are muscular tubes that use peristaltic movements to propel the urine downward into the bladder for storage until it is excreted from the body. This function is vital for the proper functioning of the urinary system, as it ensures the continuous flow of urine, preventing buildup in the kidneys and maintaining overall fluid balance within the body.

In contrast, filtering blood is the primary role of the kidneys, which removes waste products and excess substances. The bladder's role is to store urine before it is expelled, while the regulation of fluid balance involves coordinated actions of various organs and systems, which include not just the urinary tract but also the endocrine system.