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organum vasculosum lamina terminalis (OVLT)

Structure: - a circumventricular organ located in the anterior wall of the 3rd ventricle between the optic chiasm & the anterior commissure - the OVLT is characterized by the absence of a blood-brain barrier with fenestrated endothelium Function: - it serves as a chemoreceptor zone that senses osmolality & alters vasopressin (ADH) secretion

Related

osmolality (Osm) vasopressin (antidiuretic hormone, ADH)

General

circumventricular organ brain structure

References

  1. The Human Nervous System, George Paxinos, Academic Press, San Diego CA 1990
  2. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999