Circumventricular Organs and Modulation in the Midsagittal Plane of the Brain

  • H. Leonhardt
  • B. Krisch
Conference paper


The phylogenetically persistent circumventricular organs (CVOs) develop in the midsagittal plane at those sites of the prosencephalic vesicle where the prospective brain will remain thin-walled. The anlagen of the CVOs develop in this plane free from influences from the telencephalic vesicles and their developmental transformations. Only the choroid plexus of the lateral ventricles follow the developing telencephalon, extending in the form of a ram’s horn.


Pineal Gland Choroid Plexus Paraventricular Nucleus Median Eminence Arcuate Nucleus 
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© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • H. Leonhardt
  • B. Krisch

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