Anatomy

Circumventricular Organs

Highly vascularized and specialized tissues distributed principally along the midline of the VENTRICULAR SYSTEM from the FOREBRAIN to the HINDBRAIN. They are distinguished by their lack of normal BLOOD-BRAIN BARRIER and fenestrated capillaries and contain either neurosecretory neurons or chemoreceptors.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Highly vascularized and specialized tissues distributed principally along the midline of the VENTRICULAR SYSTEM from the FOREBRAIN to the HINDBRAIN. They are distinguished by their lack of normal BLOOD-BRAIN BARRIER and fenestrated capillaries and contain either neurosecretory neurons or chemoreceptors.

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

19 entry terms
  • Circumventricular Organ
  • Organ, Circumventricular
  • Organs, Circumventricular
  • Neurohemal Organ
  • Secretory Circumventricular Organs
  • Sensory Circumventricular Organs
  • Circumventricular Organ, Secretory
  • Circumventricular Organ, Sensory
  • Circumventricular Organs, Secretory
  • Circumventricular Organs, Sensory
  • Neurohemal Organs
  • Organ, Neurohemal
  • Organ, Secretory Circumventricular
  • Organ, Sensory Circumventricular
  • Organs, Neurohemal
  • Organs, Secretory Circumventricular
  • Organs, Sensory Circumventricular
  • Secretory Circumventricular Organ
  • Sensory Circumventricular Organ

MeSH Record

Aspects Covered

23 allowable subheadings

Indexed with the subheadings abnormalities, anatomy & histology, blood supply, chemistry, cytology, diagnostic imaging, drug effects, embryology, enzymology, growth & development, immunology, injuries, metabolism, microbiology, parasitology, pathology, physiology, physiopathology, radiation effects, surgery, transplantation, ultrastructure, virology.

MeSH Record

History Note

2015; for NEUROHEMAL ORGAN use NEUROSECRETORY SYSTEMS (1984-2014)

MeSH Record

Previous Indexing

  • Neurosecretory Systems (1965-2014)

MeSH Hierarchy

Tree Numbers

  1. A06w.688.178w
  2. A08w.713.049w

AMA Style

References

  1. National Library of Medicine. Circumventricular Organs. Medical Subject Headings (MeSH). 2026. Unique ID D066280. http://id.nlm.nih.gov/mesh/2026/D066280
  2. Circumventricular Organs. In: Wikipedia. https://en.wikipedia.org/wiki/Circumventricular_organs
  3. Circumventricular Organs. In: Wikidata. https://www.wikidata.org/wiki/Q205925