Atrium of lateral ventricle - Brain - Meninges - e-Anatomy
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Atrium of lateral ventricle

Atrium ventriculi lateralis

  • Related terms: Atrium; Atrium - Lateral ventricle

Definition

Muhammad A. Javaid

The atrium of the lateral ventricle is a triangular cavity situated at the junction of the body, temporal horn and occipital horn of the lateral ventricle, with all three communicating through it.

Boundaries

The principal boundaries of the atrium of lateral ventricle are:

  • Roof: body and splenium of the corpus callosum; the tapetum arches over the atrium.

  • Lateral wall: mainly the tapetum, with contribution from the caudate nucleus.

  • Floor: collateral trigone, which is continuous with the collateral eminence produced by the collateral sulcus.

  • Medial wall: calcar avis and bulb of the corpus callosum. The calcar avis is produced by the calcarine fissure, while the callosal bulb is produced by fibres of the forceps major.

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References

  • Scelsi CL, Rahim TA, Morris JA, Kramer GJ, Gilbert BC, Forseen SE. The Lateral Ventricles: A Detailed Review of Anatomy, Development, and Anatomic Variations. AJNR Am J Neuroradiol. 2020 Apr;41(4):566-572.

  • Panteli, Aikaterini & Güngör, Abuzer & Firat, Zeynep & Sarıtepe, Fatih & Ture, Hatice & Türe, Uğur. (2022). The posterior interhemispheric transparieto-occipital fissure approach to the atrium of the lateral ventricle: a fiber microdissection study with case series. Neurosurgical Review. 45. 10.1007/s10143-021-01693-0.

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