Parathyroid Gland and Hormone Quiz
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Questions and Answers

What is the primary role of Parathyroid hormone (PTH)?

  • Increasing renal excretion of calcium
  • Preserving calcium within normal range (correct)
  • Promoting bone formation
  • Stimulating conversion of activated Vitamin D to inactive Vitamin D

    • Which disorder is characterized by the presence of a functioning parathyroid adenoma and phosphaturia?

  • Tertiary hyperparathyroidism
  • Hypoparathyroidism
  • Secondary hyperparathyroidism
  • Primary hyperparathyroidism (correct)

    • What is a common cause of secondary hyperparathyroidism?

  • Increased activated Vitamin D levels
  • High phosphate levels
  • Vitamin C overdose
  • Decreased serum calcium (correct)

    • In hypoparathyroidism, what is a common post-surgical cause that leads to accidental injury to the parathyroid glands?

    <p>Autoimmune parathyroid destruction</p> Signup and view all the answers

    What is a common laboratory result associated with primary hyperparathyroidism?

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

    How does Parathyroid hormone indirectly stimulate intestinal absorption of calcium?

    <p>By stimulating conversion of inactive Vitamin D to activated Vitamin D3</p> Signup and view all the answers

    What is the primary role of Parathyroid hormone (PTH)?

    <p>Preserves calcium and phosphate within normal range</p> Signup and view all the answers

    What is the main cause of primary hyperparathyroidism leading to hypercalcemia?

    <p>Presence of a functioning parathyroid adenoma</p> Signup and view all the answers

    Which of the following is a characteristic of secondary hyperparathyroidism?

    <p>Diffused hyperplasia of all 4 parathyroid glands</p> Signup and view all the answers

    What is the primary effect of Parathyroid hormone on bone?

    <p>Increases bone resorption</p> Signup and view all the answers

    What is a common laboratory result associated with tertiary hyperparathyroidism?

    <p>Calcium phosphates precipitate in soft tissues</p> Signup and view all the answers

    In hypoparathyroidism, what does a patient often become dependent on for calcium supplementation?

    <p>Vitamin D injections</p> Signup and view all the answers

    What is a key feature of secondary hyperparathyroidism?

    <p>Decreased serum calcium response</p> Signup and view all the answers

    What happens to phosphates in cases of tertiary hyperparathyroidism?

    <p>Precipitate in soft tissues</p> Signup and view all the answers

    What result would be expected in primary hyperparathyroidism when checking ionized calcium levels?

    <p>Increased levels</p> Signup and view all the answers

    What is the consequence of undetected primary hyperparathyroidism?

    <p>Severe demineralization that may lead to osteitis fibrosa cystica</p> Signup and view all the answers

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