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Name Class Date


30.4 The Excretory System
Lesson Objectives




Describe the structures of the excretory system and explain their functions.
Explain how the kidneys clean theblood




Describe how the kidneys maintain homeostasis.
BUILD Vocabulary
A. The chart below shows key terms from the lesson with their definitions. Complete the chart by writing a strategy tohelp you remember the meaning of each term. One has been done for you.
Term|Definition|How I’m Going to Remember the Meaning|
Bowman’s capsule|A hollow, cup-shaped structure that holds theglomerulus||
Glomerulus(gloh MUR yoo lus)|Small dense network of capillaries found at the upper end of a nephron||
Nephron|Structure within the kidney that filters blood|The nephron filters.|
Ureter|Tubethat carries urine from the kidneys to the bladder||
Urethra|Tube through which urine is released from the body||
B. As you work through this lesson, you may find these terms in the activities. Whenyou need to write a key term or a definition, highlight the term or the definition.













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BUILD Understanding
Preview Visuals Previewingvisuals and taking notes about them can help you remember what you read and review for tests. Visuals include photographs, charts, graphs, and diagrams. As you look at each visual, think about why itmay be important to the lesson. Before you read the lesson, look at the diagram “Structure and Function of the Kidneys.”
In the chart below, write questions you have about the visual in the leftcolumn. One has been done for you. As you read, write answers to your questions in the right column.
Question|Answer|
What does this figure tell me about the importance of the kidneys?||

Structures ofthe Excretory System
The excretory system is made up of several different organs. Each organ has a specific job or role to play in excretion.

Follow the directions.
1. Complete the table below...