The Role of the Ureter in the Excretory System

Written by kathryn pless
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The Role of the Ureter in the Excretory System
The ureters connect the kidneys with the bladder. (Image by, courtesy of hobvias sudoneighm)

Your excretory system is responsible for removing waste from you body. The ureters are part of the urinary tract and are vital to the removal of urine from your body.

The Excretory System

As you breathe, carbon dioxide is released by your lungs. Sweat glands carry waste products out of your body through the pores of your skin. Your colon releases solid waste through bowel movements and your kidneys filter liquid waste out of your body in the form of urine.

How the Kidneys Work

As blood flows through your kidneys they filter out the unwanted minerals, water and a substance called urea. Urea is a nitrogen-rich molecule produced by your body. Your kidneys take these unwanted substances and form urine.

The Bladder

Your bladder is located below your kidneys and is the pear-shaped receptacle for urine. An adult's bladder can hold approximately two cups of urine. Muscle contractions squeeze the bladder and the urine is released from the bladder into a tube called the urethra and then out of your body.

The Ureters

Your kidneys and bladder are connected by small tubes called ureters. It is through the ureters that urine passes from the kidneys to the bladder.

The Role of the Ureters

In an adult, each ureter is approximately 16 to 18 inches long. Without the ureters, urine would have no way to travel to the bladder from the kidneys to be expelled from your body.

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