Anatomy

Brain Fornix

Heavily myelinated fiber bundle of the TELENCEPHALON projecting from the hippocampal formation to the HYPOTHALAMUS. Some authorities consider the fornix part of the LIMBIC SYSTEM. The fimbria starts as a flattened band of axons arising from the subiculum and HIPPOCAMPUS, which then thickens to form the fornix.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Heavily myelinated fiber bundle of the TELENCEPHALON projecting from the hippocampal formation to the HYPOTHALAMUS. Some authorities consider the fornix part of the LIMBIC SYSTEM. The fimbria starts as a flattened band of axons arising from the subiculum and HIPPOCAMPUS, which then thickens to form the fornix.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

41 entry terms
  • Fornix (Brain)
  • Fornix, Brain
  • Brain Fornices
  • Fornices (Brain)
  • Fornices, Brain
  • Commissura Hippocampi
  • Commissure of Fornix
  • Dorsal Hippocampal Commissure
  • Fimbria (Brain)
  • Fimbria of Hippocampus
  • Fimbria, Brain
  • Fimbria-Fornix
  • Fornical Commissure
  • Fornix-Fimbria
  • Hippocampal Commissure
  • Brain Fimbria
  • Brain Fimbrias
  • Commissura Hippocampus
  • Commissure, Dorsal Hippocampal
  • Commissure, Fornical
  • Commissure, Hippocampal
  • Commissures, Dorsal Hippocampal
  • Commissures, Fornical
  • Commissures, Hippocampal
  • Dorsal Hippocampal Commissures
  • Fimbria Fornix
  • Fimbria-Fornices
  • Fimbrias (Brain)
  • Fimbrias, Brain
  • Fornical Commissures
  • Fornix Commissure
  • Fornix Commissures
  • Fornix Fimbria
  • Fornix-Fimbrias
  • Hippocampal Commissure, Dorsal
  • Hippocampal Commissures
  • Hippocampal Commissures, Dorsal
  • Hippocampi, Commissura
  • Hippocampus Fimbria
  • Hippocampus Fimbrias
  • Hippocampus, Commissura

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

2008 (2000)

MeSH Record

Previous Indexing

  • Hippocampus (1966-1999)

MeSH Hierarchy

Tree Numbers

  1. A08w.186w.211w.180w.405w.600w
  2. A08w.186w.211w.200w.885.287w.500w.345w.600w

MeSH Record

NLM Classification

WL 314

AMA Style

References

  1. National Library of Medicine. Brain Fornix. Medical Subject Headings (MeSH). 2026. Unique ID D020712. http://id.nlm.nih.gov/mesh/2026/D020712
  2. Brain Fornix. In: Wikipedia. https://en.wikipedia.org/wiki/Fornix_(neuroanatomy)
  3. Brain Fornix. In: Wikidata. https://www.wikidata.org/wiki/Q1230047