Excretory System Overview
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Questions and Answers

What is the primary function of the kidneys?

  • Regulating blood pressure.
  • Filtering blood to remove waste products. (correct)
  • Producing hormones to regulate metabolism.
  • Storing nutrients for energy.
  • Why is high salt consumption advised against by healthcare professionals?

  • It decreases urine production.
  • It directly causes kidney failure.
  • It can lead to low blood pressure.
  • It complicates blood filtration in the kidneys. (correct)
  • What substances do the kidneys primarily filter from the blood?

  • Hormones and blood cells.
  • Toxins and nutrients.
  • Bacteria and viruses.
  • Waste products, excess salts, and water. (correct)
  • What happens if the kidneys have to filter excessive amounts of salt?

    <p>They may become fatigued and inefficient.</p> Signup and view all the answers

    In addition to waste products, what else do the kidneys help regulate?

    <p>Blood pH levels.</p> Signup and view all the answers

    What is the function of the renal artery in the excretory system?

    <p>Carries blood from the aorta to the kidneys</p> Signup and view all the answers

    Which of the following best describes the role of the bladder in the excretory system?

    <p>Stores urine until elimination</p> Signup and view all the answers

    In which order does blood travel through the excretory system starting from the aorta?

    <p>Aorta → Renal Artery → Kidneys → Renal Vein</p> Signup and view all the answers

    Which structure is directly responsible for carrying urine out of the body?

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

    What distinguishes the renal vein from the renal artery in the excretory system?

    <p>The renal vein carries deoxygenated blood; the renal artery carries oxygenated blood</p> Signup and view all the answers

    What is one of the critical roles of the kidneys in the body?

    <p>Regulating blood pressure and pH balance</p> Signup and view all the answers

    Which function is NOT associated with the kidneys?

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

    What optimal pH do most bodily fluids and tissues maintain for proper enzymatic function?

    <p>7.0</p> Signup and view all the answers

    How do the kidneys contribute to maintaining homeostasis in the body?

    <p>By balancing acidity and pH in the internal environment</p> Signup and view all the answers

    Which of the following is a consequence of the kidneys improperly regulating electrolytes?

    <p>Potential cardiovascular issues</p> Signup and view all the answers

    Study Notes

    Excretory System

    • The excretory system removes waste products from the body.
    • Key organs in the excretory system are the kidneys, ureters, bladder, and urethra.
    • Kidneys filter blood, removing waste products and excess salts and forming urine.
    • Urine is then transported through the ureters to the bladder, where it's stored.
    • Finally, urine exits the body through the urethra.
    • The diagram shows the left and right kidneys, the renal vein, renal artery, aorta, vena cava, ureter, and bladder.

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    Description

    This quiz focuses on the excretory system, highlighting its function in waste removal and the key organs involved. Learn about the roles of the kidneys, ureters, bladder, and urethra in processing and excreting urine. Familiarize yourself with the basic anatomy and physiology of this critical system.

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