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Excretory System Study Questions Worksheet
1. What is the role of the human liver in regulating the composition of body fluids?
2. What is the function of bile? Where is it made? Where is it stored? Where does it enter
the digestive system?
3. How do the liver and kidneys work together within the excretory system?
4. What are the two main functions of the kidneys?
5. Draw a nephron and label each of the following:
Glomerulus – renal tubule – collecting duct – bowman’s capsule – loop of henle
6. Explain filtration in the kidney.
7. Why do animals that live in a dry environment excrete high levels of uric acid?
8. Why are lungs considered to be excretory organs?
9. During a routine physical, a urine test indicates the presence of protein in a patient’s urine.
Explain what this could indicate about a patient’s health.
10. Think about the structure of a kidney and suggest why high blood pressure could damage
the kidneys.
11. What is the excretory system’s role in maintaining homeostasis?