Iron Metabolism and Storage Quiz
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Questions and Answers

Where is iron stored as ferritin in the body?

  • Monocyte-macrophage cells
  • Hemosiderin
  • In plasma as transferrin
  • Intestinal epithelium (correct)

    • What is the molecular structure of hemosiderin?

  • Ferritin, denatured ferritin, and other materials (correct)
  • Ferritin only
  • Denatured ferritin only
  • Ferritin and denatured ferritin

    • Why is the iron present in hemosiderin not readily available to the cell?

  • Hemosiderin has a well-defined molecular structure
  • Hemosiderin lacks iron
  • Iron is trapped inside red blood cells
  • Iron in hemosiderin cannot supply iron to the cell when needed (correct)

    • How is iron mainly stored for the formation of new hemoglobin?

    <p>In the ferritin pool</p> Signup and view all the answers

    What is the daily loss of iron for a woman due to menstrual cycle loss?

    <p>1.3 mg/day</p> Signup and view all the answers

    How do erythroid progenitors obtain iron for hemoglobin synthesis?

    <p>From plasma transferrin</p> Signup and view all the answers

    Where is iron absorbed from the intestine stored?

    <p>Intestinal epithelium</p> Signup and view all the answers

    What role does transferrin play in iron transport?

    <p>Transporting iron in plasma</p> Signup and view all the answers

    Which cells are responsible for ingesting released hemoglobin Mawa?

    <p>Monocyte-macrophage cells</p> Signup and view all the answers

    What happens to additional quantities of iron when bleeding occurs?

    <p>Excreted into feces</p> Signup and view all the answers

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