The Excretory System
Click here for a BrainPOP about the urinary and excretory systems.
Summary The urinary system, one part of the excretory system, is where urine is created and disposed of. The urinary system removes a poison called urea from the bloodstream. This is done by bringing blood to the kidneys, which filters blood. Then the urine is sent to the bladder and released through the urethra. Key Terms
kidneys - create urine and filter blood ureter - open and close the bladder urine - waste created from salt and water nephrons - found in kidneys; filter blood urethra - duct where urine is released urinary bladder - where urine is held until release skin - releases water, salt, minerals, and a small amount of urea urea - a waste compound found in urine |
Diseases in the Excretory System
Kidney failure and kidney stones go hand in hand; when kidney stones happen, a hard lump of insoluble calcium forms. Kidney failure can be fatal, however, the average person can live with only one kidney. |
Look below for a diagram of the inside of a kidney. This should give you a look at where nephrons are located inside the kidneys.
|
Works Cited
Miller, Kenneth R., and Joseph S. Levine. "30 Human Body." Biology. Upper Saddle River, NJ: Prentice Hall, 2000. 882-87. Print.
Nakhuda, Eddie. Kidney Anatomy Image. Digital image. HealthTap. HealthTapPlus, 2015. Web. 7
Mar. 2015. <https://edc2.healthtap.com/ht-staging/user_answer/
reference_image/10937/large/kidney.jpeg?1386671169>.
The Function of the Excretory System. Digital image. WIseGEEK. WiseGEEK, 2015. Web. 7 Mar.
2015. <http://images.wisegeek.com/excretory-system-diagram.jpg>.
Urinary System. BrainPOP. BrainPOP, 2015. Web. 7 Mar. 2015. <https://www.brainpop.com/health/
bodysystems/urinarysystem/>.
Nakhuda, Eddie. Kidney Anatomy Image. Digital image. HealthTap. HealthTapPlus, 2015. Web. 7
Mar. 2015. <https://edc2.healthtap.com/ht-staging/user_answer/
reference_image/10937/large/kidney.jpeg?1386671169>.
The Function of the Excretory System. Digital image. WIseGEEK. WiseGEEK, 2015. Web. 7 Mar.
2015. <http://images.wisegeek.com/excretory-system-diagram.jpg>.
Urinary System. BrainPOP. BrainPOP, 2015. Web. 7 Mar. 2015. <https://www.brainpop.com/health/
bodysystems/urinarysystem/>.