Endocrinology: Pituitary Hormones and Reproduction
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Questions and Answers

What is the role of FSH in women?

  • Regulates spermatogenesis
  • Induces ovulation and the formation of corpora lutea
  • Stimulates the formation of graafian follicles (correct)
  • Produces testosterone

    • What is the function of somatostatin in hormone regulation?

  • Regulates thyroid hormone production
  • Promotes pituitary hormone release
  • Inhibits pituitary hormone release (correct)
  • Stimulates ovulation

    • What is the role of the portal venous plexus in hormone regulation?

  • Produces pituitary hormones
  • Produces testosterone
  • Regulates ovulation
  • Carries hypothalamic factors to the anterior pituitary (correct)

    • Which transcription factor is involved in the differentiation of lactotrophs?

    <p>PIT-1</p> Signup and view all the answers

    What is the effect of dopamine on pituitary hormone release?

    <p>Inhibits pituitary hormone release</p> Signup and view all the answers

    Which hormone regulates spermatogenesis and testosterone production in males?

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

    What is the primary function of the binding proteins in the circulation of T3 and T4?

    <p>To maintain the serum unbound (“free”) T3 and T4 concentrations within narrow limits</p> Signup and view all the answers

    What is the primary effect of T3 binding to thyroid hormone nuclear receptors in target cells?

    <p>Increase in transcription of target genes</p> Signup and view all the answers

    What is the result of the stimulation of carbohydrate and lipid catabolism and protein synthesis by thyroid hormone?

    <p>Increase in the basal metabolic rate</p> Signup and view all the answers

    What is the effect of goitrogens on the thyroid gland?

    <p>Hyperplastic enlargement of the gland</p> Signup and view all the answers

    What is the relative affinity of T3 compared to T4 for binding to thyroid hormone nuclear receptors?

    <p>T3 has a tenfold greater affinity than T4</p> Signup and view all the answers

    What is the critical role of thyroid hormone in development?

    <p>Fetal and neonatal brain development</p> Signup and view all the answers

    What process helps maintain physiologic levels of hormones?

    <p>Feedback inhibition</p> Signup and view all the answers

    What can disturb the normal activity of the endocrine system?

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

    What is the primary function of the pituitary gland?

    <p>Regulating the function of other endocrine glands</p> Signup and view all the answers

    What is the term for diseases associated with the development of mass lesions?

    <p>Mass lesions</p> Signup and view all the answers

    What is the role of the hypothalamus in regulating the pituitary gland?

    <p>Controlling its function</p> Signup and view all the answers

    What is necessary for the study of endocrine diseases?

    <p>Integration of morphologic findings with biochemical measurements</p> Signup and view all the answers

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