Medial longitudinal fissure

Medial longitudinal fissure
The human brain as viewed from above. Medial longitudinal fissure visible in red, running top to bottom.
longitudinal fissure shown in red (animation)
Details
Identifiers
Latin	fissura longitudinalis cerebri, fissura cerebri longitudinalis
NeuroNames	hier-16
NeuroLex ID	Longitudinal fissure
TA	A14.1.09.007
FMA	83727
Anatomical terms of neuroanatomy [edit on Wikidata]

The medial longitudinal fissure (or cerebral fissure, or longitudinal fissure, or interhemispheric fissure) is the deep groove that separates the two hemispheres of the vertebrate brain.

The medial surfaces of the two hemispheres are as similarly convoluted by gyri and sulci as is the outer surface of the brain.

The falx cerebri, a dural brain covering, lies within the medial longitudinal fissure.

The corpus callosum crosses between the two hemispheres at the bottom of the medial longitudinal fissure.

Additional images

• 
  facies dorsalis cerebri gyri
• 
  Cerebrum. Medial face. Dissection of corpus callosum etc.
• 
  Human brain - left and right hemispheres - superior-lateral view
• 
  Basal view of a human brain
• 
  Cerebrum. Optic and olfactory nerves. Inferior view. Deep dissection.
• 
  Cerebrum. Inferior view. Deep dissection.
• 
  Meninges and superficial cerebral veins. Deep dissection. Superior view.

External links

Wikimedia Commons has media related to Longitudinal fissure.

• Anatomy image: nerv/brainsup2 at Human Anatomy Lecture (Biology 129), Pennsylvania State University
• Diagram at nih.gov