Podcast
Questions and Answers
What is the primary function of the kidneys?
What is the primary function of the kidneys?
The ureters are responsible for storing urine temporarily.
The ureters are responsible for storing urine temporarily.
False
What solution is formed when urea dissolves in excess water?
What solution is formed when urea dissolves in excess water?
urine
The structural and functional unit of the kidney is called the ______.
The structural and functional unit of the kidney is called the ______.
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Which part of the excretory system carries urine from the bladder to the outside world?
Which part of the excretory system carries urine from the bladder to the outside world?
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Match the components of the excretory system with their functions:
Match the components of the excretory system with their functions:
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The kidneys absorb 75% of the blood that reaches them.
The kidneys absorb 75% of the blood that reaches them.
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What does the nephron do in the kidneys?
What does the nephron do in the kidneys?
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What is the primary function of excretion in living organisms?
What is the primary function of excretion in living organisms?
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Urea is a safe substance that the body can hold in high amounts without causing harm.
Urea is a safe substance that the body can hold in high amounts without causing harm.
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What organ converts smaller molecules from protein breakdown into urea?
What organ converts smaller molecules from protein breakdown into urea?
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Urea is transported from the liver to the kidneys via the ______.
Urea is transported from the liver to the kidneys via the ______.
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Match the following terms with their respective functions:
Match the following terms with their respective functions:
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Study Notes
Excretion
- Excretion is the process of removing waste materials from the body.
- It is a characteristic of all living things.
- Excretion does not mean getting rid of all waste materials only waste materials truly inside the body.
- This happens even for only a short while.
- Waste travels through the body from the mouth to the anus in the digestive system, but this doesn't count as excretion
What Excretion Includes?
- Excretion includes all waste substances that cells create (ex. CO2)
- The body produces more waste than needed so removal is necessary.
- Getting rid of feces is not excretion.
Urea
- Urea is a waste substance made in liver cells.
- Protein is broken down into smaller molecules, these molecules are transported into bloodstream & to the liver.
- The liver changes these molecules into urea.
- Urea is poisonous if it builds up.
- The urea is removed from the blood by the kidneys.
- This kidney system is also known as the renal system.
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Description
This quiz covers the basics of excretion, including the definition and processes involved. It highlights the role of urea in the body's waste removal system, specifically focusing on how it is produced and eliminated. Test your knowledge of these essential biological processes!
