Biology:Calcarine sulcus

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Short description: Anatomical landmark in the brain of humans and other primates
Calcarine sulcus
Gray727 calcarine sulcus.svg
Medial surface of left cerebral hemisphere. ("Cricoid fissure" visible at left.)
Coronal section through posterior cornua of lateral ventricle. (Label for "Calcarine fissure" visible at bottom.
Part ofOccipital lobe
Arterycalcarine branch of medial occipital artery
Latinsulcus calcarinus, fissura calcarina
Anatomical terms of neuroanatomy

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". It is very deep, and known as a complete sulcus.


The calcarine sulcus begins near the occipital pole in two converging rami.[1] It runs forward to a point a little below the splenium of the corpus callosum. Here, it is joined at an acute angle by the medial part of the parieto-occipital sulcus.[1] The anterior part of this sulcus gives rise to the prominence of the calcar avis in the posterior cornu of the lateral ventricle. The cuneus is above the calcarine sulcus, while the lingual gyrus is below it.[2][3]


In humans, the calcarine sulcus usually becomes visible between 20 weeks and 28 weeks of gestation.[4]


The calcarine sulcus is associated with the visual cortex.[5] It is where the primary visual cortex (V1) is concentrated.[2][6] The central visual field is located in the posterior portion of the calcarine sulcus, and the peripheral visual field is located in the anterior portion.


The name of the calcarine sulcus comes from the Latin "calcar" meaning "spur".[7]

Additional images


  1. 1.0 1.1 Johns, Paul (2014). "3 - Functional neuroanatomy" (in en). Clinical Neuroscience. Churchill Livingstone. pp. 27–47. doi:10.1016/B978-0-443-10321-6.00003-5. ISBN 978-0-443-10321-6. 
  2. 2.0 2.1 Swenson, R. S.; Gulledge, A. T. (2016). "12 - The Cerebral Cortex" (in en). Conn's Translational Neuroscience. Academic Press. pp. 263–288. doi:10.1016/B978-0-12-802381-5.00021-X. ISBN 978-0-12-802381-5. 
  3. Wen, Hung Tzu; Rhoton, Albert L.; Mussi, Antonio C. M. (2017). "2 - Surgical Anatomy of the Brain" (in en). Youmans and Winn Neurological Surgery (7th ed.). Elsevier. pp. 49–75. ISBN 9780323341493. 
  4. "Embryology and Anatomy of the Brain" (in en). Diagnostic Imaging: Obstetrics - Diagnostic Imaging (3rd ed.). Elsevier. 2016. pp. 68–83. doi:10.1016/B978-0-323-39256-3.50023-6. ISBN 978-0-323-39256-3. 
  5. Osborne, Benjamin J.; Liu, Grant T.; Newman, Nancy J. (2007). "8 - Cranial Nerve II and Afferent Visual Pathways" (in en). Textbook of Clinical Neurology (3rd ed.). Saunders. pp. 113–132. doi:10.1016/B978-141603618-0.10008-6. ISBN 978-1-4160-3618-0. 
  6. Cechetto, David F.; Topolovec, Jane C. (2002). "Cerebral Cortex" (in en). Reference Module in Neuroscience and Biobehavioral Psychology - Encyclopedia of the Human Brain. Academic Press. pp. 663–679. doi:10.1016/B0-12-227210-2/00087-X. ISBN 978-0-12-227210-3. 
  7. "Anatomy Glossary". 

External links