Hormones and Growth Hormone Biosynthesis
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Where are the mRNAs for IGF-I and IGF-II found?

  • In the brain
  • In the liver (correct)
  • In the kidneys
  • In the heart

    • What stimulates the secretion of IGF-I after birth?

  • IGF-II
  • Thyroid hormone
  • Insulin
  • Growth hormone (correct)

    • What is the pattern of IGF-I concentration in plasma?

  • Remains constant throughout life
  • Increases during old age and declines during childhood
  • Declines during childhood and increases in old age
  • Rises during childhood and peaks at puberty, then declines (correct)

    • What is the main role of IGF-II during fetal development?

    <p>Growth of the fetus before birth</p> Signup and view all the answers

    What happens in human fetuses with overexpressed IGF-II?

    <p>Several organs, especially the tongue, muscles, kidneys, heart, and liver, develop out of proportion to the rest of the body</p> Signup and view all the answers

    In adults, where is the gene for IGF-II expressed?

    <p>Only in the choroid plexus and meninges</p> Signup and view all the answers

    What is the effect of IGF-I on growth?

    <p>It has pronounced growth-stimulating activity</p> Signup and view all the answers

    What is the relationship between IGF-II and growth hormone?

    <p>IGF-II is largely independent of growth hormone</p> Signup and view all the answers

    When is IGF-I secretion independent of growth hormone?

    <p>Only before birth</p> Signup and view all the answers

    What is the pattern of IGF-I concentration in old age?

    <p>It declines</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser