Definition of Parieto-occipital fissure
1. Noun. A sulcus near the posterior end of each hemisphere that separates the parietal lobes and the occipital lobes in both hemispheres.
Medical Definition of Parieto-occipital fissure
1. A very deep, almost vertically oriented fissure on the medial surface of the cerebral cortex, marking the border between the parietal lobe and the cuneus of the occipital lobe; its lower part curves forward and fuses with the anterior extent of the calcarine fissure (sulcus calcarinus); the great depth of this combined fissure causes a bulge in the medial wall of the occipital horn of the lateral ventricle, the calcar avis. Synonym: sulcus parieto-occipitalis, fissura parietooccipitalis, parieto-occipital fissure. (05 Mar 2000)
Parieto-occipital Fissure Pictures
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Lexicographical Neighbors of Parieto-occipital Fissure
Literary usage of Parieto-occipital fissure
Below you will find example usage of this term as found in modern and/or classical literature:
1. Anatomy, Descriptive and Surgical by Henry Gray (1901)
"The portion on the outer surface is called the external parieto-occipital fissure, to distinguish it from the part continued on to the internal surface, ..."
2. Cunningham's Manual of Practical Anatomy by Daniel John Cunningham, Arthur Robinson (1914)
"from the occipital pole is the parieto-occipital fissure, which crosses the posterior ... The lower end of the parieto-occipital fissure joins an important ..."
3. Quain's Elements of Anatomy by Jones Quain, Edward Albert Sharpey-Schäfer, George Dancer Thane, Johnson Symington (1893)
"Its posterior limit is the boundary of the parietal lobe, viz., the parieto-occipital fissure, round the extremity of which an ..."
4. The Anatomy of the Nervous System from the Standpoint of Development and by Stephen Walter Ranson (1920)
"where the calcarine is joined by the parieto-occipital fissure. ... The parieto-occipital fissure, which is really a deep fossa with much buried cortex at ..."
5. Journal of Nervous and Mental Disease by American Neurological Association, Philadelphia Neurological Society, Chicago Neurological Society, New York Neurological Association, Boston Society of Psychiatry and Neurology (1890)
"To find the parieto-occipital fissure.—Find the lambda, mark a point 3 mm. anterior to it, draw a line through this at right angles to the longitudinal ..."
6. Medical Record by George Frederick Shrady, Thomas Lathrop Stedman (1889)
"On its median surface the parieto-occipital fissure limits it in front. On the under surface the anterior edge of the tentorium about marks the anterior ..."