Calcium and Phosphorus in the Body
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Questions and Answers

Which hormone enhances distal convoluted tubule (DCT) reabsorption of calcium while inhibiting phosphate reabsorption in the kidney?

  • Calcitonin
  • Vitamin D
  • Parathyroid hormone (correct)
  • FGF23

    • Where is the vitamin D receptor (VDR) present, and what is its role?

  • Intestine, increasing phosphate reabsorption
  • Osteoblast, enhancing osteoclast differentiation (correct)
  • Osteoclast, direct inhibition of activity
  • Kidney, decreasing tubular calcium reabsorption

    • Which hormone inhibits phosphate reabsorption in the kidney and increases phosphate reabsorption in the intestine?

  • Magnesium
  • Calcitonin
  • FGF23 (correct)
  • Vitamin D

    • What is the role of calcitonin in the regulation of body calcium level?

    <p>Acute exposure leads to its action</p> Signup and view all the answers

    What is the effect of continuous exposure to parathyroid hormone (PTH) on bone?

    <p>Increase in calcium bone efflux</p> Signup and view all the answers

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