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Calcium & Phosphorus Metabolism: Dr. Halil Resmi 23.02.2024
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Calcium & Phosphorus Metabolism: Dr. Halil Resmi 23.02.2024

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Questions and Answers

What is the primary role of the parathyroid gland in calcium metabolism?

  • Controlling skeletal remodeling of calcium
  • Regulating intestinal absorption of calcium
  • Facilitating urinary excretion of calcium
  • Monitoring extracellular calcium levels and maintaining them within a precise range (correct)

    • Which of the following is NOT a process that requires precise calcium concentration in the body?

  • Intracellular signaling
  • Protein synthesis (correct)
  • Contraction of the heart and other muscles
  • Conduction of nervous impulses

    • Which portion of the total calcium in the blood is responsible for controlling physiologic processes?

  • The calcium complexed with anions such as citrate and phosphate
  • The calcium bound to circulating proteins
  • The ionized (unbound or "free") calcium (correct)
  • All portions of the total calcium contribute equally

    • Which of the following is NOT one of the key organs involved in calcium metabolism?

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

    What is the approximate range of serum total calcium concentration considered normal by most clinical laboratories?

    <p>8.8 - 10.5 mg/dL</p> Signup and view all the answers

    What percentage of the total calcium in the blood is bound to circulating proteins or complexed with anions?

    <p>50% - 60%</p> Signup and view all the answers

    Which of the following processes is NOT mentioned as requiring precise calcium concentration maintenance in the body?

    <p>Lipid metabolism</p> Signup and view all the answers

    Which of the following organs is NOT directly involved in the regulation of calcium metabolism?

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

    What is the primary function of the parathyroid gland in relation to calcium metabolism?

    <p>Monitoring extracellular calcium levels and maintaining them within a precise range</p> Signup and view all the answers

    Which of the following statements about calcium metabolism is NOT true according to the text?

    <p>The parathyroid gland is the only organ involved in regulating calcium metabolism</p> Signup and view all the answers

    What term is used in the text to refer to the portion of calcium that is not bound to proteins or complexed with anions?

    <p>All of the above</p> Signup and view all the answers

    Which of the following statements about the importance of calcium is NOT true?

    <p>Calcium is essential for the regulation of body temperature</p> Signup and view all the answers

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