Chapter 25: The Urinary System
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Questions and Answers

What is the term for the absence of urine production?

  • Anuria (correct)
  • Polyuria
  • Oliguria
  • Glomerulus
  • Which food type generally raises the pH of urine?

  • Dairy (correct)
  • Citrus fruits
  • Vegetables
  • Meats
  • What does the presence of ketones in urine indicate?

  • High glucose levels
  • The body using fat for energy (correct)
  • Normal protein consumption
  • Adequate carb intake
  • What is the function of the glomerulus in the nephron?

    <p>Blood filtration</p> Signup and view all the answers

    What substance is normally found in urine and can indicate a urinary tract infection?

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

    Which condition can lead to kidney stones or osteomalacia?

    <p>Chronic high urine pH</p> Signup and view all the answers

    Which molecule type is harder to remove from the body due to filtering limitations?

    <p>Large drug molecules</p> Signup and view all the answers

    What process must vitamin D undergo in the kidney to become active?

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

    Which hormone is needed to regulate calcium levels in the blood?

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

    What condition can inadequate vitamin D levels lead to?

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

    Which organ primarily produces erythropoietin (EPO)?

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

    Which mechanism involves the movement of solutes with sodium?

    <p>Symport mechanism</p> Signup and view all the answers

    What is the function of aquaporin channels in the descending Loop of Henle?

    <p>Enhance water reabsorption</p> Signup and view all the answers

    Which hormone increases the number of sodium pumps in the DCT?

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

    What is the main function of Endothelins in the kidneys?

    <p>Cause vasoconstriction</p> Signup and view all the answers

    Which hormone inhibits aldosterone, allowing sodium to leave and water to be excreted?

    <p>Natriuretic hormones</p> Signup and view all the answers

    What regulates acid and bases slowly compared to the lungs' ability to rid the body of acids?

    <p>The kidneys</p> Signup and view all the answers

    How do diuretics affect urine volume?

    <p>Increase urine volume</p> Signup and view all the answers

    What effect does caffeine have on ADH?

    <p>Inhibits ADH release</p> Signup and view all the answers

    What is the main function of PCT (Proximal Convoluted Tubule) regarding hydrogen ions?

    <p>Secrete hydrogen ions to lower acidity</p> Signup and view all the answers

    What does the natriuretic hormone do?

    <p>Inhibit sodium reabsorption</p> Signup and view all the answers

    What is the medical term for urination?

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

    Where does urine form in the body?

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

    What causes ADH to work on the cell's membrane and pull water back for reabsorption?

    <p>Low osmolarity in blood</p> Signup and view all the answers

    What is the main function of nephrons in the kidney?

    <p>Absorb solutes</p> Signup and view all the answers

    Which part of the nephron is responsible for reabsorption and secretion of substances?

    <p>Proximal convoluted tubule (PCT)</p> Signup and view all the answers

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