Excretion in Various Organs: Roles and Mechanisms

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Questions and Answers

What is the role of the colon in excretion?

  • Excreting solid waste (correct)
  • Filtering blood
  • Storing metabolic waste
  • Producing urea

Which organ removes excess mineral salts?

  • Liver
  • Lungs
  • Bladder
  • Kidneys (correct)

Where does urea, a waste product, originate in the body?

  • Lungs
  • Bladder
  • Colon
  • Liver (correct)

Which organ stores and periodically removes urine?

<p>Bladder (B)</p> Signup and view all the answers

What is the primary function of the skin in excretion?

<p>Regulating body temperature (B)</p> Signup and view all the answers

Which organ is involved in removing indigestible substances and waste products from the liver through feces?

<p>Alimentary Canal (D)</p> Signup and view all the answers

What function do the lungs perform in excretion?

<p>Expelling carbon dioxide (D)</p> Signup and view all the answers

In excretion, what is the role of the liver?

<p>Processing toxins and waste products (D)</p> Signup and view all the answers

What ions are removed by the kidneys to maintain balance in the body?

<p>Nitrogenous wastes (D)</p> Signup and view all the answers

What does the bladder act as in the excretory system?

<p>Urine reservoir (A)</p> Signup and view all the answers

Which organ is primarily responsible for excreting carbon dioxide and water vapor?

<p>Skin (B)</p> Signup and view all the answers

What substances are excreted by the skin through perspiration or sweat?

<p>Water, mineral salts, and small amounts of urea (B)</p> Signup and view all the answers

Which organ forms urea through the deamination of excess amino acids?

<p>Liver (B)</p> Signup and view all the answers

Where do bile pigments originate in the human body?

<p>Liver (C)</p> Signup and view all the answers

What is the primary excretory function of the lungs?

<p>Remove carbon dioxide and water vapor (B)</p> Signup and view all the answers

What is the excretory role of the skin in regulating body temperature?

<p>Excreting sweat containing water (A)</p> Signup and view all the answers

What is the origin of carbon dioxide excreted from the lungs?

<p>Cellular respiration (D)</p> Signup and view all the answers

What is the main substance extracted from blood by sweat glands for excretion by the skin?

<p>Mineral salts (D)</p> Signup and view all the answers

What is the excretory function of the liver related to bile pigments?

<p>Breakdown of hemoglobin (A)</p> Signup and view all the answers

How do the lungs contribute to maintaining the internal stability of an organism?

<p>By removing carbon dioxide (D)</p> Signup and view all the answers

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