The Excretory System Worksheet
A Grade 7 Science worksheet focusing on the human excretory system, its organs, functions, and role in maintaining homeostasis.
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The Excretory System
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Read each question carefully and answer to the best of your ability. Refer to the diagram of the excretory system to help you.
Diagram of the Human Excretory System
1. Which of the following is the primary organ of the excretory system responsible for filtering blood?
Liver
Kidney
Stomach
Lungs
2. What is the main waste product filtered out of the blood by the kidneys?
Oxygen
Glucose
Urea
Protein
3. The tubes that carry urine from the kidneys to the bladder are called .
4. The stores urine until it is released from the body.
5. The process of maintaining a stable internal environment in the body is called .
6. The excretory system only removes liquid waste from the body.
True
False
7. Sweating is a function of the excretory system.
True
False
8. Briefly explain the main function of the excretory system.
9. Name two organs other than the kidneys that help the body excrete waste products.
Use the words below to complete the sentences.
10. The tiny filtering units within the kidneys are called .
11. The liquid waste product produced by the kidneys is called .
12. The is the tube through which urine leaves the body.