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Chapter  12 Objectives

Excretion

 
What is the difference between excretion and secretion?

How does excretion help to maintain homeostasis?

What are the major metabolic wastes and how is each formed?

What are the major metabolic wastes of ameba, paramecia, and hydra and how are they removed from the organism?

How are metabolic wastes removed from the earthworm?

How are metabolic wastes removed from the grasshopper?

Be able to label the excretory structures of earthworms and grasshoppers.

Describe the metabolic wastes of the human body.

Describe the 3 roles of the liver in excretion.

Describe the structure and function of the each organ of the human urinary system.

Explain in detail the formation of urine in the kidney. (filtration, reabsorption)

Be able to label the parts of the urinary system, kidney, and nephron.

What excretory function do the lungs perform?

What functions does the skin perform? What does the skin excrete?

Be able to label a diagram illustrating the structures of skin.

For a Flowchart Outline of the Chapter
Flow Chart



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