Biology 4 kids
Biology4 Kids: Excretion Is Not Elimination
An overview of the excretory system, how it functions, what organs are included, and diseases that might attack it.
CK-12 Foundation
Ck 12: Excretory System Diseases
[Free Registration/Login may be required to access all resource tools.] Kidney stones. Imagine having that travel through your excretory system. Kidney stones can be more than a few millimeters in diameter. Painful? Sometimes extremely...
Untamed Science
Untamed Science: Biology: Human Biology: Excretory System
Explore how the human body rids itself of wastes with the function of the kidneys.
CK-12 Foundation
Ck 12: Biology: Kidneys
[Free Registration/Login may be required to access all resource tools.] Describes the roles of the kidneys in homeostasis.
US National Library of Medicine
Medline Plus: Kidneys and Urinary System Topics
This site provides articles about kidneys and kidney diseases, along with other topics about the kidneys and the urinary system from the National Library of Medicine. You can find everything you may need here, from statistics to...
TeachEngineering
Teach Engineering: Just Passing Through
This lesson helps students explore the functions of the kidney and its place in the urinary system. Students learn how engineers design instruments to help people when kidneys are not functioning properly or when environmental conditions...
Inner Body
Innerbody: Digestive System
Take a look inside the human body's digestive system. This site features diagrams of the digestive tract and each part is accompanied by labels and descriptions. Just select an organ by moving the mouse over its image.
CK-12 Foundation
Ck 12: Life Science: Excretion
[Free Registration/Login may be required to access all resource tools.] You might have noticed that sometimes your urine is darker than usual. This can happens when your body is low on water and trying to reduce the amount of water lost...
CK-12 Foundation
Ck 12: Biology: Urinary System
[Free Registration/Login may be required to access all resource tools.] Introduces the components of the urinary system.
Soft Schools
Soft Schools: Excretory System
Take this interactive, multiple-choice quiz over the human excretory system, then review your score and any missed questions at the end.
Soft Schools
Soft Schools: Biology: Human Body Worksheets and Quizzes
Test your understanding of the human body and all of its complexities with these interactive worksheets, games and quizzes.
Discovery Education
Your Digestive System
What do you know about your digestive system? This site feature factoids and more interesting information concerning this human body system. Trace the path of food from one end to the next.
CK-12 Foundation
Ck 12: Biology: Urinary System
[Free Registration/Login may be required to access all resource tools.] Describes the structure and function of organs that comprise the urinary system, and explains how the production of urine and the process of urination are controlled.
CK-12 Foundation
Ck 12: Biology: Excretory System Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the excretory system.
CK-12 Foundation
Ck 12: Life Science: 11.36 Excretory System
Understand the structure and function of the human Excretory system.
Ministerio de Educación (Spain)
Ministerio De Educacion: Cuerpo Humano Interactivo
This is a tour of the human skeleton, the senses and the excretory system. The content is displayed with pictures and interactive graphics.
Other
The Italian Society of Neonatology: The Kidney Through the Ages
This resource provides information about the excretory system, specifically the kidney.
Other
E Synopsis: Normal Ureter
This is a useful site that shows several cross section pictures that can be enlarged with a brief description. There are also references listed for further research.
CK-12 Foundation
Ck 12: Biology: Excretion
[Free Registration/Login may be required to access all resource tools.] Describes organs of the excretory system and their roles.
Other
Stanford Children's Health: How the Liver Works
This brief site discusses the anatomy and functions of the liver. Although concise, key information is provided.
The Franklin Institute
Franklin Institute: Cutting Dead Cells
This site briefly explores how the integumentary system supports the excretory system in the removal of waste through the growth of hair, fingernails, and toenails.
Mocomi & Anibrain Digital Technologies
Mocomi: Function of the Liver and Pancreas
Discusses the function of the liver and the pancreas and provides fun facts.
Mocomi & Anibrain Digital Technologies
Mocomi: How Do Kidneys Work?
Explains the parts and function of the kidneys and why they are important.