Chronic Hypervitaminosis A Symptoms
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Questions and Answers

What are the early signs of chronic hypervitaminosis A?

  • Heart palpitations
  • Dry and pruritic skin (correct)
  • Rise in intracranial pressure
  • Enlarged liver

    • Which organ is primarily affected by chronic overdose of vitamin A?

  • Pancreas
  • Lungs
  • Kidney
  • Liver (correct)

    • Why should pregnant women avoid excessive vitamin A intake?

  • It causes congenital malformations in the developing fetus (correct)
  • It reduces the risk of premature birth
  • It improves fetal growth
  • It prevents gestational diabetes

    • What are good sources of preformed vitamin A?

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

    Which category of food contains carotenes, which are provitamin A sources?

    <p>Yellow, orange, and dark-green vegetables and fruits</p> Signup and view all the answers

    In what form is dietary vitamin D converted into after consumption?

    <p>$1,25$ dihydroxycholecalciferol (active form of vitamin D3)</p> Signup and view all the answers

    Which symptom is an early sign of vitamin A deficiency?

    <p>Increased visual threshold</p> Signup and view all the answers

    What is the recommended daily allowance (RDA) of vitamin A for males?

    <p>900 retinol activity equivalents (RAE)</p> Signup and view all the answers

    What does excessive intake of vitamin A lead to?

    <p>Hypervitaminosis A</p> Signup and view all the answers

    Which symptom is caused by severe vitamin A deficiency?

    <p>Irreversible loss in the number of visual cells</p> Signup and view all the answers

    What is the equivalent amount for 1 RAE?

    <p>1 μg of retinol</p> Signup and view all the answers

    What is the symptom of xerophthalmia associated with severe vitamin A deficiency?

    <p>Formation of opaque scar tissue</p> Signup and view all the answers

    Which of the following are considered fat-soluble vitamins?

    <p>Vitamin A, D, E, and K</p> Signup and view all the answers

    Which vitamin is essential for vision, reproduction, growth, and maintenance of epithelial tissues?

    <p>Vitamin A</p> Signup and view all the answers

    Which derivative of vitamin A mediates most of its actions except for vision?

    <p>Retinoic acid</p> Signup and view all the answers

    Which vitamin is stored in the liver?

    <p>Vitamin A</p> Signup and view all the answers

    Which statement is true about fat-soluble vitamins?

    <p>They are not as readily absorbed as water-soluble vitamins</p> Signup and view all the answers

    Which vitamin can be toxic in excess amounts?

    <p>Vitamin A</p> Signup and view all the answers

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