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Central Sulcus (Fissure)

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Abstract

Usually, the central sulcus presents two anterior convexities, but occasionally, four or five may occur. The upper half of the sulcus may turn sharply backward. The upper end of the sulcus usually cuts the dorsal border of the brain and turns caudally; rarely, it ends as much as 1 cm from the dorsal border. The upper third of the sulcus is frequently separated from the rest of the sulcus. The lower part of the sulcus may be directed forward and may unite with the subcentral anterior sulcus.

Usually, the central sulcus presents two anterior convexities, but occasionally, four or five may occur. The upper half of the sulcus may turn sharply backward. The upper end of the sulcus usually cuts the dorsal border of the brain and turns caudally; rarely, it ends as much as 1 cm from the dorsal border. The upper third of the sulcus is frequently separated from the rest of the sulcus. The lower part of the sulcus may be directed forward and may unite with the subcentral anterior sulcus. In some cases, the central sulcus may be interrupted, doubled, or absent; when doubled, the sulci are separated by the rolandic gyrus. The name rolandic was first applied by Leuret in 1839 (Anatomie Comparée du Systéme Nerveux) because the Italian anatomist Rolando directed attention to the sulcus. However, this sulcus was seen and recorded by Viq d'Azyr (Traité d'Anatomie et de Physiologie) in 1796.

Riferimenti dell’opera originale

Elenco riportato come compare nella fonte, senza normalizzazione dei formati bibliografici.

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Classificazione anatomica

Sistemi:
Sistema nervoso

Provenienza del contenuto

Adattamento

Adattamento di «Central Sulcus (Fissure) — Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System» di Ronald A. Bergman, Adel K. Afifi, Ryosuke Miyauchi. Fonte: https://www.anatomyatlases.org/AnatomicVariants/NervousSystem/Text/CentralSulcusFissure.shtml Opera originale distribuita con licenza CC BY-NC-SA 4.0 (https://creativecommons.org/licenses/by-nc-sa/4.0/deed.it). Adattamento a cura di Redazione AIVA. Modifiche rispetto all’originale: Testo originale inglese riprodotto integralmente e riorganizzato nel formato scheda del portale (sintesi, testo, riferimenti), senza modificarne le affermazioni. La traduzione italiana non è ancora stata eseguita, e la pagina lo dichiara. Le figure non sono state copiate: sono collegate alla pagina d’origine. Questa pubblicazione non è approvata né avallata dagli autori dell’opera originale.

Licenza

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