Medial longitudinal fissure

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Brain: Medial longitudinal fissure
The human brain as viewed from above. Great longitudinal fissure visible in red, running top to bottom.
longitudinal fissure shown in red (animation)
Latin	fissura longitudinalis cerebri, fissura cerebri longitudinalis
Gray's	p.818
NeuroNames	hier-16
NeuroLex ID	birnlex_4041
TA	A14.1.09.007
FMA	FMA:83727

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

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

The corpus callosum crosses the medial longitudinal fissure.

Additional images

facies dorsalis cerebri gyri
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.

Human brain: forebrain (cerebrum, cerebral cortex, cerebral hemispheres, grey matter) (TA A14.1.09.002–240, 301–320, GA 9.818–826)

Frontal lobe

Superolateral

Prefrontal	Superior frontal gyrus 4l 6l 8l Middle frontal gyrus 9l 10l 46 Inferior frontal gyrus: 11l 47-Pars orbitalis Broca's area 44-Pars opercularis 45-Pars triangularis Superior frontal sulcus Inferior frontal sulcus

Precentral	Precentral gyrus Precentral sulcus

Medial/inferior

Prefrontal	Superior frontal gyrus 4m 6m Medial frontal gyrus 8m 9m Paraterminal gyrus/Paraolfactory area 12 Straight gyrus 11m Orbital gyri/Orbitofrontal cortex 10m 11m 12 Ventromedial prefrontal cortex 10m Subcallosal area 25 Olfactory sulcus Orbital sulci

Precentral	Paracentral lobule 4 Paracentral sulcus

Both

Parietal lobe

Superolateral	Superior parietal lobule 5l 7l Inferior parietal lobule 40-Supramarginal gyrus 39-Angular gyrus Parietal operculum 43 Intraparietal sulcus

Medial/inferior	Paracentral lobule 1m 2m 3m 5m Precuneus 7m Marginal sulcus

Both	Postcentral gyrus/primary somatosensory cortex 1 2 3 Secondary somatosensory cortex 5 Posterior parietal cortex 7

Occipital lobe

Superolateral	Occipital pole of cerebrum Lateral occipital gyrus 18 19 Lunate sulcus Transverse occipital sulcus

Medial/inferior	Primary visual cortex 17 Cuneus Lingual gyrus Calcarine fissure

Temporal lobe

Superolateral	Transverse temporal gyrus/Primary auditory cortex 41 42 Superior temporal gyrus 38 22/Wernicke's area Middle temporal gyrus 21 Inferior temporal gyrus 20 Superior temporal sulcus Inferior temporal sulcus

Medial/inferior	Fusiform gyrus 37 Medial temporal lobe 27 28 34 35 36 Inferior temporal sulcus

Interlobar
sulci/fissures

Superolateral	Central (frontal+parietal) Lateral (frontal+parietal+temporal) Parieto-occipital Preoccipital notch

Medial/inferior	Medial longitudinal Cingulate (frontal+cingulate) Collateral (temporal+occipital) Callosal sulcus

Limbic lobe

Parahippocampal gyrus	anterior Entorhinal cortex Perirhinal cortex Posterior parahippocampal gyrus Prepyriform area

Cingulate cortex/gyrus	Subgenual area 25 Anterior cingulate 24 32 33 Posterior cingulate 23 31 Isthmus of cingulate gyrus: Retrosplenial cortex 26 29 30

Hippocampal formation	Hippocampal sulcus Fimbria of hippocampus Dentate gyrus Rhinal sulcus

Other	Supracallosal gyrus Uncus Amygdala

Insular lobe

General

Some categorizations are approximations, and some Brodmann areas span gyri.

M: CNS

anat (n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco (m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug (N1A/2AB/C/3/4/7A/B/C/D)

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