Ch 8: Excretory organs
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Questions and Answers

What is the role of the colon in excretion?

  • Excreting solid waste (correct)
  • Filtering blood
  • Removing urea
  • Producing bile pigments

    • Where does urea, mineral salts, and water originate from?

  • Bladder
  • Kidneys
  • Lungs
  • Liver (correct)

    • What is the primary role of the bladder in excretion?

  • Storing and expelling urine (correct)
  • Balancing bodily fluids
  • Excreting metabolic wastes
  • Filtering blood

    • Which organ is responsible for exhaling carbon dioxide as part of excretion?

    <p>Lungs</p> Signup and view all the answers

    Where are excess ions, water, and nitrogenous wastes removed from the blood?

    <p>Kidneys</p> Signup and view all the answers

    What is the main function of the skin in the context of excretion?

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

    Which organ plays a role in storing urine until it is expelled?

    <p>Bladder</p> Signup and view all the answers

    What substance does the alimentary canal remove from the liver through feces?

    <p>Indigestible substances</p> Signup and view all the answers

    Which organ removes excess urea in the body?

    <p>Kidneys</p> Signup and view all the answers

    What is the primary excretory role of the lungs?

    <p>Elimination of carbon dioxide (CO2) and water vapor</p> Signup and view all the answers

    Which organ excretes perspiration that includes water, mineral salts, and small amounts of urea?

    <p>Skin</p> Signup and view all the answers

    What is extracted from the blood by the skin's excretory role?

    <p>Urea</p> Signup and view all the answers

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

    <p>Liver</p> Signup and view all the answers

    Where do bile pigments originate in the human body?

    <p>Liver</p> Signup and view all the answers

    Which of the following is NOT a substance excreted by the skin?

    <p>Hemoglobin</p> Signup and view all the answers

    What is a significant component of sweat that helps regulate body temperature?

    <p>Water</p> Signup and view all the answers

    Which organ plays a role in detoxification along with excretion in humans?

    <p>Liver</p> Signup and view all the answers

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

    <p>By-product of cellular respiration</p> Signup and view all the answers

    What is the primary excretory role of the liver?

    <p>Detoxification and excretion</p> Signup and view all the answers

    What substance is excreted by the skin through perspiration?

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

    Where are urea and bile pigments formed in the human body?

    <p>By the liver</p> Signup and view all the answers

    Which organ plays a primary role in detoxification, metabolism, and excretion?

    <p>Liver</p> Signup and view all the answers

    What is a by-product of cellular respiration that the lungs primarily excrete?

    <p>Water vapor</p> Signup and view all the answers

    Which organ removes excess amino acids through the formation of urea?

    <p>Liver</p> Signup and view all the answers

    What is the primary excretory substance excreted by the lungs?

    <p>Carbon dioxide</p> Signup and view all the answers

    Where do mineral salts and urea originate from in the sweat produced by the skin?

    <p>From the blood</p> Signup and view all the answers

    What significant component of sweat helps regulate body temperature?

    <p>Water</p> Signup and view all the answers

    Which metabolic process leads to the production of CO2 and H2O as waste products excreted by the lungs?

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

    What is the role of the liver in excretion related to bile pigments?

    <p>Breaking down hemoglobin</p> Signup and view all the answers

    What is a substance excreted by the kidneys, originating from the liver where amino acids are deaminated?

    <p>Urea</p> Signup and view all the answers

    Which body part is directly involved in processing toxins and preparing waste products for elimination?

    <p>Liver</p> Signup and view all the answers

    What is the main excretory function of the lungs that contributes to the body's acid-base balance?

    <p>Expiration of carbon dioxide</p> Signup and view all the answers

    Which organ in the human body is responsible for balancing blood pressure, electrolytes, and acid-base levels by filtering blood?

    <p>Kidneys</p> Signup and view all the answers

    What role does the alimentary canal play in excretion?

    <p>Discarding indigestible substances</p> Signup and view all the answers

    Which of the following is a substance excreted by the alimentary canal through the colon as solid waste?

    <p>Bile pigments</p> Signup and view all the answers

    What is the primary container for storing urine in the human body before expulsion?

    <p>Bladder</p> Signup and view all the answers

    Which primary excretory role does the skin play in regulating body functions?

    <p>Controlling body temperature</p> Signup and view all the answers

    By what process does the liver eliminate indigestible substances and waste products from the body?

    <p>Fecal elimination</p> Signup and view all the answers

    Which component exhaled by the lungs serves a crucial role in maintaining blood pH?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the role of the liver in excretion?

    <p>Bile production and waste elimination</p> Signup and view all the answers

    Which organ plays an essential role in removing excess amino acids through the formation of urea?

    <p>Liver</p> Signup and view all the answers

    What is the primary excretory function of the skin related to perspiration?

    <p>Temperature regulation</p> Signup and view all the answers

    Where do urea and bile pigments originate in the human body?

    <p>Liver</p> Signup and view all the answers

    Which metabolic process leads to the production of carbon dioxide and water vapor excreted by the lungs?

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

    What substances are excreted by the skin through perspiration?

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

    What is the primary excretory role of the lungs concerning waste products?

    <p>Elimination of carbon dioxide</p> Signup and view all the answers

    What is the primary role of the liver in the context of excretion?

    <p>Producing and excreting urea</p> Signup and view all the answers

    What is the main function of the lungs in the context of regulation of blood pH?

    <p>Preventing acidosis by exhaling carbon dioxide</p> Signup and view all the answers

    How does the process of excreting solid waste differ in the colon and bladder?

    <p>The colon excretes solid waste, and the bladder holds urine for expulsion</p> Signup and view all the answers

    Which organ is primarily responsible for balancing blood pressure and electrolyte levels?

    <p>Kidneys</p> Signup and view all the answers

    What is the main function of the skin in the process of excretion?

    <p>Regulating body temperature and excreting waste molecules</p> Signup and view all the answers

    Which organ does not secrete substances but plays a pivotal role in storing and eliminating urine?

    <p>Bladder</p> Signup and view all the answers

    What is the major difference between the excretory roles of the alimentary canal and the kidneys?

    <p>The alimentary canal removes indigestible substances, while the kidneys filter blood and excrete wastes</p> Signup and view all the answers

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