This comprehensive resource examines the human excretory system, kidney function, nitrogen wastes, water and salt balance, and more.

This resource provides general information about the human excretory system and kidneys, and a section only about nephrons. It includes several pictures, diagrams and explanations for understanding.

This multiple-choice quiz on the excretory system allows students to get hints for each question and check their answers after submitting.

This StudyCards stack enables students to review the vocabulary encountered when studying the excretory system.

[Free Registration/Login may be required to access all resource tools.] The urinary system controls the amount of water in the body and removes wastes. Any problem with the urinary system can also affect many other body systems. Learn...

[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...

Take this interactive, multiple-choice quiz over the human excretory system, then review your score and any missed questions at the end.

[Free Registration/Login may be required to access all resource tools.] Toxic waste must be disposed of properly or there can be serious consequences. It is the same with your body--your waste needs to be removed from you. And that is...

This resource provides information about the excretory system, specifically the kidney.

[Free Registration/Login may be required to access all resource tools.] Sometimes, the urinary system is called the excretory system. But the urinary system is only one part of the excretory system. Recall that the excretory system is...

[Free Registration/Login may be required to access all resource tools.] Introduces the components of the urinary system.

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...

Game looking at the major systems of the human body. Covers the cardiovascular, respiratory, digestive, and excretory systems.

This site explores the various systems in the human body such as the circulatory, respiratory, and excretory systems.

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.

A video lesson explaining the structure and function of the human body's major organ systems. [5:58]

[Free Registration/Login may be required to access all resource tools.] Describes organs of the excretory system and their roles.

Test your knowledge of the human urinary system with this interactive labeling exercise.

An online biology textbook on the structure and function of the kidneys. Full of labeled, color diagrams for better understanding.

This is a tour of the human skeleton, the senses and the excretory system. The content is displayed with pictures and interactive graphics.

This unit explores two important systems related to the functions of nutrition: the circulatory and excretory system. It contains 9 interactive activities.

This brief site discusses the anatomy and functions of the liver. Although concise, key information is provided.

Test your understanding of the human body and all of its complexities with these interactive worksheets, games and quizzes.

[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...