Calcarine fissure

The calcarine fissure 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."

Anatomy

The calcarine sulcus begins near the occipital pole in two converging rami

Rami

Rami or RAMI can refer to:*Rami, the plural of ramus, literally a branch, as of a plant, nerve, or blood vessel*Specifically, rami are upward portions on both sides of the mandible...

 and runs forward to a point a little below the splenium

Splenium

The posterior end of the corpus callosum is the thickest part, and is termed the splenium .It overlaps the tela chorioidea of the third ventricle and the mid-brain, and ends in a thick, convex, free border....

 of the corpus callosum

Corpus callosum

The corpus callosum , also known as the colossal commissure, is a wide, flat bundle of neural fibers beneath the cortex in the eutherian brain at the longitudinal fissure. It connects the left and right cerebral hemispheres and facilitates interhemispheric communication...

, 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.

Function

The calcarine sulcus is where the primary visual cortex is concentrated. The central visual field is located in posterior portion of the calcarine sulcus and the peripheral visual field in the anterior portion.

External links

• http://www2.umdnj.edu/~neuro/studyaid/Practical2000/Q31.htm - "The Visual Pathway from Below"
• NIF Search - Calcarine Fissure via the Neuroscience Information Framework
  Neuroscience Information Framework
  The Neuroscience Information Framework is a repository of global neuroscience web resources, including experimental, clinical, and translational neuroscience databases, knowledge bases, atlases, and genetic/genomic resources.-Description:...