Temporal horn
Cornu temporale
- Latin synonym: Cornu inferius ventriculi lateralis
- Synonym: Inferior horn of lateral ventricle
- Related terms: Temporal horn of lateral ventricle; Inferior horn of lateral ventricle
Definition
The temporal horn of lateral ventricle is the longest and largest horn of the lateral ventricle. It extends anteriorly from the atrium, passes below the thalamus into the temporal lobe, and terminates anteriorly at the amygdala.
Boundaries
The principal boundaries of the temporal horn of lateral ventricle are:
Floor: hippocampus and collateral eminence; the ventricular surface of the hippocampus is covered by a thin layer of white matter called the alveus.
Roof: thalamus, tail of the caudate nucleus, and tapetum of the corpus callosum.
Lateral wall: tapetum, which separates the temporal horn from the optic radiations.
Medial wall: related to the choroidal fissure, which runs along this wall.
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.
