The Excretory System
Grade 11 Science worksheet covering the structure and function of the human excretory system, including kidneys, nephrons, and the process of urine formation.
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The Excretory System
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Read each question carefully and answer to the best of your ability. Use the provided image as a reference for the first section.
Refer to the diagram of the human excretory system below to answer the following questions.
1. Identify the main organ responsible for filtering waste from the blood.
2. Name the tube that transports urine from the kidneys to the bladder.
1. Which of the following is NOT a primary function of the excretory system?
Maintaining water balance
Regulating blood pressure
Producing digestive enzymes
Removing metabolic waste
2. The functional unit of the kidney is the:
ureter
nephron
bladder
urethra
1. The process of filtering blood in the kidneys is called .
2. Urine is temporarily stored in the before being expelled from the body.
3. The primary waste product removed by the kidneys is .
1. Briefly describe the role of the glomerulus in the process of urine formation.
2. Explain how the kidneys help maintain the body's water balance.
1. The liver is a major organ of the excretory system.
True
False
2. Reabsorption is the process where useful substances are returned to the blood from the renal tubule.
True
False
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