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 (D)</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 (B)</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 (B)</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 (C)</p> Signup and view all the answers

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

<p>Neural stimulation (C)</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 (D)</p> Signup and view all the answers

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