Hypothalamic Regulation of Hormonal Function Introduction
15 Questions
1 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 do the sympathetic nerve fibers reach the anterior lobe of the pituitary from?

  • The petrosal nerves
  • The hypothalamus
  • The Rathke pouch
  • The capsule (correct)
  • What is the embryological origin of the posterior pituitary?

  • Hypothalamus
  • Rathke pouch
  • Supraoptic and paraventricular nuclei (correct)
  • Third ventricle
  • What forms a direct vascular link between the hypothalamus and the anterior pituitary?

  • Portal hypophysial vessels (correct)
  • Hypothalamohypophysial tract
  • Petrosal nerves
  • Sympathetic nerve fibers
  • What is the main function of the hypothalamus with respect to the limbic system?

    <p>Regulates emotional and instinctual behavior</p> Signup and view all the answers

    Which part of the pituitary gland arises embryologically from an evagination from the roof of the pharynx?

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

    What type of capillaries drain into the sinusoidal portal hypophysial vessels?

    <p>Fenestrated capillaries</p> Signup and view all the answers

    What is the primary plexus on the ventral surface of the hypothalamus formed by?

    <p>Arterial twigs from the carotid arteries and circle of Willis</p> Signup and view all the answers

    What stimulates thirst in response to decreased ECF volume?

    <p>Angiotensin II</p> Signup and view all the answers

    Which region is generally defined as the portion of the ventral hypothalamus from which the portal vessels arise?

    <p>Median eminence</p> Signup and view all the answers

    What factor contributes to an increase in liquid intake during eating (prandial drinking)?

    <p>Increase in plasma osmolality as food is absorbed</p> Signup and view all the answers

    How are the hormones of the posterior pituitary gland synthesized?

    <p>In the cell bodies of the magnocellular neurons and transported down the axons</p> Signup and view all the answers

    Where are vasopressin-secreting neurons found?

    <p>In the suprachiasmatic nuclei</p> Signup and view all the answers

    What is the function of V2 receptors?

    <p>Act through Gs to increase cyclic adenosine monophosphate levels</p> Signup and view all the answers

    Where are vasopressin and oxytocin also found, apart from the posterior pituitary gland?

    <p>Gonads and adrenal cortex</p> Signup and view all the answers

    What is the source of hormones that are typical neural hormones?

    <p>Secreted by nerve cells into the circulation</p> Signup and view all the answers

    More Like This

    Hypothalamic Regulation of Hormones
    40 questions
    Use Quizgecko on...
    Browser
    Browser