Anatomical hierarchy

General Anatomy > Cardiovascular system > Arteries > Aorta > Aortic arch > Common carotid artery > Internal carotid artery > Cerebral part > Middle cerebral artery > Superior terminal branches; Superior cortical branches; M2 segment

Anatomical children

Anterior parietal artery Artery of central sulcus Artery of postcentral sulcus Artery of precentral sulcus Lateral frontobasal artery; Lateral orbitofrontal artery Posterior parietal artery Prefrontal artery

Translations

Description

The insular part (M2 segment) of the middle cerebral artery extends anteriorly on the insula, this segment in known as the insular segment. It is also known as the Sylvian segment when the opercular segments are included. The MCA branches may bifurcate or sometimes trifurcate into trunks in this segment which then extend into branches that terminate towards the cortex. When they bifurcate, they are denominated in the Terminologia anatomica as:

  • Inferior terminal branches (Inferior cortical branches; M2 segment): branches supplying the cortex of the temporal lobe (three temporal branches (anterior, middle, posterior), branch to the angular gyrus, two parietal branches (anterior, posterior)
  • Superior terminal branches; Superior cortical branches; M2 segment: branches supplying the cortex of the frontal and parietal lobes as well as the central region (lateral frontobasal artery, prefrontal sulcal artery, pre-Rolandic (precentral) and Rolandic (central) sulcal arteries)

This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from http://www.wikipedia.org
Text by Antoine Micheau, MD - Copyright IMAIOS

Images

Illustrations Arteries image Superior terminal branches; Superior cortical branches; M2 segment
Angiography Internal carotid artery - Anteroposterior (AP) (RAO: 0° - CAU: 0°) image Superior terminal branches; Superior cortical branches; M2 segment
Angiography Internal carotid artery - Lateral (RAO: 90° - CAU: 0°) image Superior terminal branches; Superior cortical branches; M2 segment
Angiography Internal carotid artery - Oblique RAO: 45° - CAU: 0°) image Superior terminal branches; Superior cortical branches; M2 segment
Angiography Internal carotid artery - Oblique (LAO: 42° - CAU: 0°) image Superior terminal branches; Superior cortical branches; M2 segment
Angiography Internal carotid artery - Cranial (LAO: 0° - CRA: 52°) image Superior terminal branches; Superior cortical branches; M2 segment
MRI Axial image Superior terminal branches; Superior cortical branches; M2 segment
MRI Sagittal image Superior terminal branches; Superior cortical branches; M2 segment
MRI Coronal image Superior terminal branches; Superior cortical branches; M2 segment
3D 3D-MIP Horizontal rotation image Superior terminal branches; Superior cortical branches; M2 segment
3D 3D-MIP Vertical rotation image Superior terminal branches; Superior cortical branches; M2 segment

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