Brain: Medial longitudinal fissure
Great longitudinal fissure visible running left to right.
Basal view of a human brain
Latin	fissura longitudinalis cerebri, fissura cerebri longitudinalis
Gray's	subject #189 818
NeuroNames	hier-16
NeuroLex ID	birnlex_4041

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

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

[edit] Additional images

facies dorsalis cerebri gyri

Human brain - left and right hemispheres - superior-lateral view

[edit] External links

• Anatomy at PSU nerv/brainsup2
• Diagram at nih.gov

v • d • e 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 Primary motor cortex (4) · Premotor cortex (6) · Supplementary motor area (6) · Frontal eye fields (8) 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 Other Supracallosal gyrus · Uncus Insular lobe Long gyrus of insula · Short gyri of insula · Circular sulcus of insula General Operculum · Poles of cerebral hemispheres Some categorizations are approximations, and some Brodmann areas span gyri.