Calcarine sulcus

The calcarine sulcus (or calcarine fissure) is an anatomical landmark located at the caudal end of the medial surface of the brain of humans and other primates. Its name comes from the Latin "calcar" meaning "spur".[1] It is a complete sulcus.

Calcarine sulcus
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.
Details
Part ofOccipital lobe
Arterycalcarine branch of medial occipital artery
Identifiers
Latinsulcus calcarinus, fissura calcarina
NeuroNames44
NeuroLex IDbirnlex_1086
TAA14.1.09.225
FMA83749
Anatomical terms of neuroanatomy

Anatomy

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 sulcus gives rise to the prominence of the calcar avis in the posterior cornu of the lateral ventricle.

Function

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.

Additional images
  • Position of calcarine sulcus (shown in red).
  • Calcarine fissure (shown in red).
  • Calcarine sulcus highlighted in Brodmann Area 17, Lateral and Medial views.
  • Medial surface of cerebral cortex - gyri

References
  1. "Anatomy Glossary". www.anatomy.usyd.edu.au. Archived from the original on 2015-09-02. Retrieved 2011-04-09.
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