organum vasculosum
Acronym:
OV
The term organum vasculosum refers to one of seven predominantly cellular structures of the anterior hypothalamic region as defined by Nissl stain. Located with the lamina terminalis at the anteroventral end, or optic recess of the third ventricle, it is bounded dorsally by the median preoptic nucleus and laterally by the anteroventral periventricular nucleus. Its neuronal composition is similar to that of those adjacent structures. As one of the circumventricular organs, the organum vasculosum is highly vascular and lacks a blood brain barrier ( Saper-2004 ).
Also known as: supraoptic crest, vascular organ of lamina terminalis, Organum vasculosum of lamina terminalis
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