Anatomy of the Posterior Pituitary
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Questions and Answers

What is the primary characteristic of pituicytes in the posterior pituitary?

  • Central nervous system support
  • Myelinated axons
  • Electrical signal transmission
  • Highly branched structure (correct)

    • What is the most abundant cell type in the posterior pituitary?

  • Oligodendrocytes
  • Pituicytes (correct)
  • Neurons
  • Astrocytes

    • Which type of glial cells are found in the posterior pituitary?

  • Schwann cells
  • Pituicytes (correct)
  • Microglia
  • Ependymal cells

    • Pituicytes in the posterior pituitary share similarities with which of the following cells?

    <p>Microglia in the brain</p> Signup and view all the answers

    What distinguishes pituicytes from other glial cells in the posterior pituitary?

    <p>Their involvement in cerebrospinal fluid production</p> Signup and view all the answers

    What is the significance of pituicytes being highly branched?

    <p>They can respond to a larger area of stimuli</p> Signup and view all the answers

    What is the function of the neurosecretory (Herring) bodies in the pars nervosa?

    <p>To release oxytocin and vasopressin into the capillaries upon neural stimulation</p> Signup and view all the answers

    Which factor determines whether oxytocin or vasopressin is released from the neurosecretory (Herring) bodies?

    <p>Neural stimulation</p> Signup and view all the answers

    What is the primary source of the unmyelinated axons in the pars nervosa?

    <p>Supraoptic and paraventricular hypothalamic nuclei</p> Signup and view all the answers

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