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Questions and Answers
What is the main function of the excretory system?
What is the main function of the excretory system?
- To aid in digestion
- To regulate body temperature
- To remove excess and unnecessary materials from the body fluids (correct)
- To produce metabolic and other wastes
In which organisms do most of the waste substances leave the body as urine?
In which organisms do most of the waste substances leave the body as urine?
- Insects and arachnids
- Reptiles and birds
- Fish and amphibians
- Humans and other amniotes (correct)
Which organs are specifically considered a part of the excretory system?
Which organs are specifically considered a part of the excretory system?
- Only the organs used for excretion (correct)
- Organs related to digestion
- All organs involved in waste production
- Organs involved in respiration
What is the term used in the narrow sense to refer to the excretory system in humans and other amniotes?
What is the term used in the narrow sense to refer to the excretory system in humans and other amniotes?
Why is the term 'excretion' not usually used in more formal classifications of anatomy or function?
Why is the term 'excretion' not usually used in more formal classifications of anatomy or function?
Flashcards
What's the main function of the excretory system?
What's the main function of the excretory system?
To remove waste products from the body fluids.
Who uses urine for excretion?
Who uses urine for excretion?
Humans and other amniotes use urine to get rid of waste.
What makes up the excretory system?
What makes up the excretory system?
Organs directly involved in excretion are part of the excretory system.
What's the urinary system?
What's the urinary system?
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Why is 'excretion' rarely used in formal classifications?
Why is 'excretion' rarely used in formal classifications?
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Study Notes
Main Functions of the Excretory System
- The primary function is to remove waste and excess substances from the body to maintain homeostasis.
- It regulates fluid balance, electrolytes, and blood pressure.
Organisms Excreting Waste as Urine
- Most vertebrates, including humans, excrete waste substances primarily in the form of urine.
- Other organisms, such as some amphibians and reptiles, also participate in urine excretion.
Organs of the Excretory System
- Key organs include kidneys, ureters, bladder, and urethra.
- Kidneys filter blood and produce urine through nephrons.
Excretory System in Humans and Amniotes
- The term "urinary system" is specifically used to refer to the excretory system in humans and other amniotes.
Formal Classifications of Anatomy or Function
- The term 'excretion' is less common in formal anatomical classifications as it encompasses both elimination and the physiological processes of metabolism.
- In formal contexts, focus is often placed on specific organs and their roles rather than the process itself.
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