What Is the Function of the Collecting Duct?

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The collecting ducts of the kidneys are a network of small tubes that act as a drainage system in the body. They are the place where urine is first formed. The primary functions of the collecting ducts are the transportation of urine and absorption of water.

The network of ducts facilitates the transportation of urine by channeling the waste into the renal pelvis for drainage into the ureters. The muscular ureter tubes lead to the urinary bladder from where urine is eliminated.

The actions of the collection ducts are controlled by hormones that cause dilation or constriction of the ducts based on the body’s electrolyte balance. Constriction conserves water while dilation allows more fluid to leave the body through elimination. Aldosterone and antidiuretic hormone are important hormones involved in these processes.

The healthy functioning of collection ducts is essential in correcting dehydration. These tubes reabsorb a significant amount of water within the body to restore the body’s fluid and electrolyte balance. Conditions such as tumors, blockages and infections of the collection ducts can seriously impair their ability to perform their essential functions.

Kidney stones may form within the collecting ducts of the kidneys. These rock-like masses frequently cause pain or discomfort if they block the flow of urine. The Urology Center of Colorado recommends the daily consumption of enough liquids to produce two liters, or one gallon, of urine daily.