Urinary System Anatomy Quiz
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Questions and Answers

What is the main function of the kidneys?

  • Filter the blood (correct)
  • Transport urine to the bladder
  • Produce and store urine
  • Regulate blood pressure
  • Which structure carries urine from the kidney to the bladder?

  • Collecting duct
  • Renal artery
  • Ureter (correct)
  • Vasa recta
  • Where does blood enter the kidney from?

  • Renal vein
  • Renal artery
  • Inferior vena cava
  • Aorta (correct)
  • What is the functional unit of the kidney?

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

    Which part of the nephron contains a bundle of capillaries called glomerulus?

    <p>Bowman’s capsule</p> Signup and view all the answers

    What is the main function of the glomerulus in the nephron?

    <p>Filter the blood to form filtrate</p> Signup and view all the answers

    What is the purpose of the afferent arteriole in the glomerulus?

    <p>To increase blood pressure in the glomerulus</p> Signup and view all the answers

    What is the function of the basement membrane in the glomerulus?

    <p>To discourage filtration of small plasma proteins</p> Signup and view all the answers

    Which part of the nephron merges into the renal pelvis?

    <p>Collecting ducts</p> Signup and view all the answers

    What are the two distinct regions of the nephron called?

    <p>Renal cortex and renal medulla</p> Signup and view all the answers

    What is the function of the posterior pituitary gland in the kidney?

    <p>Increases permeability of DCT and collecting duct to reabsorb more water</p> Signup and view all the answers

    What is the main role of AQP-1 water channels in the kidney?

    <p>Transport water into the descending limb of the loop of Henle</p> Signup and view all the answers

    Which process sets up the vertical osmotic gradient in the interstitial fluid in the kidney?

    <p>Counter current multiplication in the loop of Henle</p> Signup and view all the answers

    What is the function of NKCC2 channel in the ascending limb of the loop of Henle?

    <p>Transport 1x Na+, 1x Cl-, and 2x K+ out into the interstitial fluid</p> Signup and view all the answers

    How does the Na+/K+ pump contribute to sodium reabsorption in the PCT?

    <p>Creates a concentration gradient for Na+ in the interstitial fluid</p> Signup and view all the answers

    What is the main function of transepithelial transport in the PCT?

    <p>Reabsorb glucose, amino acids, and water</p> Signup and view all the answers

    What is one of the key roles of vasopressin (ADH) in the kidney?

    <p>Insertion of AQP-2 channels into luminal membrane for water reabsorption</p> Signup and view all the answers

    What is the primary function of glycoproteins in relation to plasma proteins such as albumin?

    <p>Repel plasma proteins for filtration</p> Signup and view all the answers

    Which part of the nephron is responsible for setting up a concentration gradient for water reabsorption?

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

    What is one key role played by vasa recta in maintaining osmotic gradient?

    <p>Creating a countercurrent exchange to maintain osmotic gradient</p> Signup and view all the answers

    Blood leaves the kidney to the inferior vena cava via renal veins.

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

    The glomerulus filters the blood through a single layer of endothelial wall, making it less permeable compared to other capillaries.

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

    The collecting ducts merge into the renal medulla, which then goes on to the ureter.

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

    The nephron contains two distinct regions: the renal cortex and the renal pelvis.

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

    The afferent arteriole has a larger diameter compared to the efferent arteriole to allow more blood in for efficient filtration.

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

    Active transport is the only way transepithelial transport can take place in the PCT.

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

    The concentration gradient set up by the Na+/K+ pump allows for controlled water reabsorption in the loop of Henle.

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

    The ascending limb of the loop of Henle contains AQP-1 channels for water reabsorption.

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

    Vasopressin (ADH) increases the permeability of the DCT and collecting duct to reabsorb more water.

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

    The osmotic gradient set up by counter current multiplication in the loop of Henle is maintained by counter current exchange in the vasa recta.

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

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