Grade 9 Science: The Urinary System
A worksheet for Grade 9 Science students covering the structure and function of the human urinary system, including key organs and processes.
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Grade 9 Science: The Urinary System
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Read each question carefully and answer to the best of your ability. Refer to your notes and textbook if needed.
1. Which organ is primarily responsible for filtering waste products from the blood to produce urine?
Liver
Kidney
Pancreas
Spleen
2. What is the functional unit of the kidney?
Ureter
Nephron
Bladder
Urethra
1. The two main functions of the urinary system are excretion and .
2. Urine is stored in the before being expelled from the body.
3. The tubes that carry urine from the kidneys to the bladder are called .
1. Briefly describe the path of urine from its formation in the kidneys until it leaves the body.
1. The kidneys are located in the abdominal cavity, just above the liver.
True
False
2. The primary role of the nephron is to reabsorb all water from the filtrate back into the bloodstream.
True
False
Label the parts of the human kidney cross-section shown below:
1.
2.
3.
4.
Explain the role of the urinary system in maintaining homeostasis within the human body. Provide specific examples of how it regulates fluid balance and electrolyte levels.