|Brain: Calcarine fissure|
Medial surface of left cerebral hemisphere. ("Calcarine fissure" visible at left.)
Coronal section through posterior cornua of lateral ventricle. (Label for "Calcarine fissure" visible at bottom.
|Latin||sulcus calcarinus, fissura calcarina|
|Part of||Occipital lobe|
|calcarine branch of medial occipital artery|
The calcarine fissure (or calcarine sulcus) is an anatomical landmark located at the caudal end of the medial surface of the brain. Its name comes from the Latin "calcar" meaning "spur.". It is a complete sulcus.
The calcarine sulcus begins near the occipital pole in two converging rami and runs forward to a point a little below the splenium of the corpus callosum, where it is joined at an acute angle by the medial part of the parieto-occipital sulcus. The anterior part of this fissure gives rise to the prominence of the calcar avis in the posterior cornu of the lateral ventricle.
The calcarine sulcus is where the primary visual cortex (V1) is concentrated. The central visual field is located in the posterior portion of the calcarine sulcus and the peripheral visual field in the anterior portion.
|Wikimedia Commons has media related to Calcarine sulcus.|
- Anatomy diagram: 13048.000-3 at Roche Lexicon - illustrated navigator, Elsevier
- Atlas image: eye_38 at the University of Michigan Health System - "The Visual Pathway from Below"
- NIF Search - Calcarine Fissure via the Neuroscience Information Framework