Collateral fissure

The collateral fissure is a large sulcus on the tentorial surface of the cerebral hemisphere and extends from near the occipital pole to within a short distance of the temporal pole. It is also known as the medial occipitotemporal sulcus.^[1]

Collateral fissure
Medial surface of left cerebral hemisphere. (Collateral fissure labeled at bottom left.)
Medial surface of right cerebral hemisphere. Collateral sulcus divides limbic (purple) and temporal lobe (green).
Details
Identifiers
Latin	sulcus collateralis, fissura collateralis
NeuroNames	47
TA98	A14.1.09.206
TA2	5442
FMA	83751
Anatomical terms of neuroanatomy [edit on Wikidata]

Behind, it lies below and lateral to the calcarine fissure, from which it is separated by the lingual gyrus; in front, it is situated between the parahippocampal gyrus and the anterior part of the fusiform gyrus.

Additional images

• 
  Coronal section through posterior cornua of lateral ventricle. (Collateral fissure labeled at bottom center.)
• Human brain dissection video (62 sec). Demonstrating location of collateral sulcus.