Loop of Henle Anatomy and Function
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Questions and Answers

What is the primary location where sodium and bicarbonate are reabsorbed back into the bloodstream?

  • Distal convoluted tubule
  • Thick ascending limb of the Loop of Henle (correct)
  • Collecting duct
  • Descending limb of the Loop of Henle
  • Which of the following ions enter the thick ascending limb compartment of the Loop of Henle via the NKCC2 transporter?

  • Chloride only
  • Sodium only
  • Sodium, potassium, and chloride in specific ratios (correct)
  • Potassium only
  • In the process of selective reabsorption in the proximal convoluted tubule, how is glucose reabsorbed into the blood?

  • Through facilitated diffusion
  • By exocytosis
  • By active transport (correct)
  • By passive diffusion
  • What enzyme catalyzes the dehydration of carbonic acid into water and carbon dioxide in the lumen-urine within the PCT?

    <p>Carbonic anhydrase</p> Signup and view all the answers

    What happens to hydrogen ions in the lumen-urine when bound to bicarbonate inside the proximal convoluted tubule?

    <p>Formation of carbonic acid</p> Signup and view all the answers

    Which part of the nephron is responsible for reabsorption of approximately 80% of the glomerular filtrate via selective reabsorption?

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

    What is the primary mechanism by which water and carbon dioxide enter the PCT compartment in the nephron?

    <p>Passive diffusion</p> Signup and view all the answers

    Which segment of the nephron has thin walls, making them permeable to water and allowing urea to enter the filtrate?

    <p>Descending limb of the Loop of Henle</p> Signup and view all the answers

    Which process actually forms water and carbon dioxide from carbonic acid within the PCT in the nephron?

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

    In the Loop of Henle, which region is the most concentrated due to the transport of chloride ions and free passing of sodium ions?

    <p>Ascendig limb</p> Signup and view all the answers

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