1.37. Urinary System http://www.ck12.org
1.37 Urinary System
- Describe the parts of urinary system.
Why is urine important?
You might have had to give a urine sample when you’ve gone to the doctor for a check-up. Urine is basically your
liquid waste. The contents of your urine can tell the doctor if you have certain illnesses.
The Urinary System
Sometimes, the urinary system (Figure1.66) is called the excretory system. But the urinary system is only one part
of the excretory system. Recall that the excretory system is also made up of the skin, lungs, and large intestine, as
well as the kidneys. Theurinary systemis the organ system that makes, stores, and gets rid of urine.
Organs of the Urinary System
- As you can see above (Figure1.66), the kidneys are two bean-shaped organs.Kidneysfilter and clean the
blood and form urine. They are about the size of your fists and are found near the middle of the back, just
below your rib cage.
2.Uretersare tube-shaped and bring urine from the kidneys to the urinary bladder. - Theurinary bladderis a hollow and muscular organ. It is shaped a little like a balloon. It is the organ that
collects urine. - Urine leaves the body through theurethra.