Multiple Choice
Which of the following organisms have an excretory system that functions without a filtration step?
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25. The Urinary System
Introduction to the Urinary System
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Which structure in the human body is primarily responsible for filtering the blood?
A
Liver
B
Spleen
C
Kidneys
D
Heart
Verified step by step guidance1
Begin by identifying the primary function of each organ listed in the options: Liver, Spleen, Kidneys, and Heart.
Understand that the liver is primarily responsible for detoxifying chemicals and metabolizing drugs, not filtering blood.
Recognize that the spleen is involved in filtering blood to remove old or damaged red blood cells and pathogens, but it is not the primary organ for filtering blood.
Learn that the heart's main function is to pump blood throughout the body, not to filter it.
Identify that the kidneys are the primary organs responsible for filtering blood, removing waste products, and balancing electrolytes and fluids in the body.
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