Anatomy Atlases(tm) : A digital library of anatomy information

Home | About | FAQ | Reviews | Search

Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus III: Nervous System: Brain: Fissures and Sulci: Intraparietal Sulcus

Illustrated Encyclopedia of Human Anatomic Variation: Opus III: Nervous System: Brain: Fissures and Sulci: Intraparietal Sulcus

Intraparietal Sulcus

Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD

Peer Review Status: Internally Peer Reviewed


The intraparietal sulcus may be formed by various combinations of its three phylogenetic components: a rostral vertical component, the postcentral inferior and superior sulci; a middle horizontal component, the intraparietal proper; and a caudal component, the paroccipital.

The inferior and superior postcentral components may separate from the intraparietal sulcus proper and join the postcentral sulcus. The inferior postcentral sulcus may terminate in a forked fashion with the anterior branch directed toward the lower concavity of the central sulcus. Occasionally, the inferior postcentral sulcus gives rise below the bifurcation to the sulcus retrocentralis (postcentralis) transversus. The development of the transverse retrocentral (postcentral) sulcus bears an inverse relationship to the development of the subcentral posterior sulcus situated close to the sylvian fissure. The transverse postcentral and the subcentral sulci may join the sylvian fissure.

The relationship of the horizontal component (intraparietal sulcus proper) to the superior and inferor postcentral sulci has been described under five categories: in category 1, all three sulci are separate; in category 2, the horizontal component is continuous with the inferior postcentral component; in category 3, the superior and inferior postcentral sulci are confluent and are separate from the intraparietal sulcus proper; in category 4, all three components are continuous with other; and in category 5, the horizontal component is continuous with the superior postcentral component.

The intraparietal sulcus proper may have one or two dorsal branches extending into the superior parietal lobule and continuous with one or more of its sulci. One or more short ventral branches may also extend into the inferior parietal lobule. One of these branches, the intermedius primus or anterior, marks the boundry between the supramarginal and angular gyri. The intermedius primus or anterior, may be continous with the superior temporal sulcus. Another branch, the sulcus angularis, may be axial to the angular gyrus, and it may be continuous with the superior temporal sulcus. The sulcus intermedius posterior is very variable and represents another inferior branch of the intraparietal sulcus proper.


References

Chi, T.K. and C. Chang. (1941) The sulcal pattern of the Chinese brain. Am. J. Phys. Anthropol. 28:167-207.

Connolly, C.J. (1941) The fissural pattern in the brain of Negroes and Whites. The frontal lobe. Am. J. Physiol. Anthrop. 28:133-165.

Connolly, C.J. (1942) The fissural patternin the brain of Negroes and Whites. The parietal and temporal lobes. Am. J. Physiol. Anthrop. 29:225-265.

Cunningham, D.J. (1890) The fissure of Rolando. J. Anat. Physiol. 25:1-23.

Debierre, C. (1891) Sur les anomalies des circonvolutions du cervéau de l'homme. Duplicilé de la sissure de Rolando, absence de la scissure de Rolando. Soc. Biol. Comptes Rendus Hebdomadaires des Séances et Mémoires. 43:369-372.

Gerlach, E.j. and H. Weber. (1929) über ein menschliches Gehirn mit beiderseitger Verdoppelung der Zentralfurche. Anat. Anz. 67:440-452.

Leggiardi-Laura, C. (1901) Sur la signification de la "duplicité de la scissure de Rolando" et sur un rapport constant de la scissure post-rolandique. Arch. Ital. Biol. 36:355.

Linell, E.A. and B.M. Koster. (1924) A developmental anomaly of the cerebral cortex. Arch. Neurol. Psychiatry 12:167-172.

Sergi, S. (1911) Variations de developpement du lobe frontal chez l'homme. Arch. Ital. Biol. 55:138-139.

Sperino, G. (1901) Decrizione morfologica dell'encefalo del Prof. Carlo Giacomini. Int. Monatsschrift. Anatomie and Physiology 18:313-386.

Thompson, R.B. (1911-12) Complete unilateral interruption of the fissure of Rolando. J. Anat. Physiol. 45:433-437.

Tricomi, G. (1902) Deux cas de duplicité du sulcus Rolandi. Arch. Ital. Biol. 37:490.

Waterson, D. (1907) Complete bilateral interruption of the fissure of Rolando. J. Anat. Physiol. 41:143-146.

Section Top | Title Page
Home | About Us | FAQ | Reviews | Contact Us | Search

Anatomy Atlases is curated by Michael P. D'Alessandro, M.D. and Ronald A. Bergman, Ph.D.

Please send us comments by filling out our Comment Form.

All contents copyright © 1995-2017 the Author(s) and Michael P. D'Alessandro, M.D. All rights reserved.

"Anatomy Atlases", the Anatomy Atlases logo, and "A digital library of anatomy information" are all Trademarks of Michael P. D'Alessandro, M.D.

Anatomy Atlases is funded in whole by Michael P. D'Alessandro, M.D. Advertising is not accepted.

Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.

The information contained in Anatomy Atlases is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.

URL: http://www.anatomyatlases.org/