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Hormones Quiz: Paracrines and Steroid Hormones
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Hormones Quiz: Paracrines and Steroid Hormones

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@AstonishedSnake5020

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Questions and Answers

What are paracrines?

  • The receptors for steroid hormones
  • Circulating hormones that are never broken down
  • Local hormones that act on the cells that produced them
  • Local hormones that act on neighboring cells (correct)

    • When a steroid hormone binds to its target cell receptor, what does it do?

  • Is converted into cholesterol, which acts as a second messenger
  • Turns specific genes of the nuclear DNA on or off (correct)
  • Causes the formation of releasing hormones
  • Causes the formation of cyclic AMP

    • Which of the following is NOT a steroid?

  • Cortisone
  • Testosterone
  • Insulin (correct)
  • Estrogen

    • What does the hypophyseal portal system drain?

    <p>Anterior pituitary</p> Signup and view all the answers

    What is an important stimulus for the release of oxytocin?

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

    Hormones from the posterior pituitary are released in response to?

    <p>Nerve impulses from the hypothalamus</p> Signup and view all the answers

    What is the main target for ADH (antidiuretic hormone)?

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

    What is the primary effect of calcitonin?

    <p>Increase excretion of calcium ions in urine</p> Signup and view all the answers

    Where are hormones secreted from the posterior pituitary gland synthesized?

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

    In the formation of thyroxin, iodine is added to which amino acid?

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

    What is the stimulus for the release of parathyroid hormone?

    <p>Low levels of calcium ions in the blood</p> Signup and view all the answers

    What is the primary target for glucagon?

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

    What is the role of somatostatin from the pancreas?

    <p>Inhibit secretion of insulin and glucagon</p> Signup and view all the answers

    An increase in glycogenolysis by the liver is an important effect of which hormone?

    <p>Glucagon.</p> Signup and view all the answers

    What is the primary stimulus for the release of insulin?

    <p>An elevated level of blood glucose.</p> Signup and view all the answers

    What does the pineal gland secrete?

    <p>Melatonin.</p> Signup and view all the answers

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