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Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-06-08
Submitted: 2020-04-07
Accepted: 2020-05-25
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The contribution of the middle cerebral artery and callosal artery to the vascularization of the Facies convexa of the brain in horses with reference to the equine-specific cartographic pattern of the neopallium

L. Böing, F. Heun, H. Gasse
DOI: 10.5603/FM.a2020.0065
·
Pubmed: 32639577

open access

Ahead of Print
ORIGINAL ARTICLES
Published online: 2020-06-08
Submitted: 2020-04-07
Accepted: 2020-05-25

Abstract

Background: The extremely complex surface architecture of the equine brain does not allow a uniform transfer of anatomical data from other mammalian species, e.g., dog or cat. Rather, a special approach is required to elucidate the equine-specific patterns of cerebral vascular ramifications. Therefore, a novel cartographic system was applied. Prior attention was paid to the A. cerebri media (MCA) and to the A. corporis callosi (CA), as they spread over the widest part of the neopallium’s Facies convexa (i.e. the lateral and dorsal surface), thus being of particular interest in terms of surgical treatment of trauma of the skull and brain.

Materials and methods: The brains of 17 adult warmblood horses were studied. The neopallium’s Facies convexa was subdivided into 15 Sectors clearly delineated by the Primary Sulci and by related Auxiliary Lines. The courses and destinations of Main Branches (= branches of 1st or 2nd order, with a minimum caliber of 0.75 mm) of MCA and CA were topographically analyzed by means of superimposed graphical sketches.

Results: The MCA had six Main Branches (numbered in rostrocaudal direction); the CA had seven Main branches. The Main Branches of the MCA spread over the widest part of the Facies convexa, but never reached the rostral pole and the caudal pole of the neopallium. Clearly, the Main Branches of CA proceeded from the hemisphere’s medial side across the Margo dorsalis cerebri, thus supplying rostrodorsal and dorsal Sectors of the Facies convexa.

Conclusions: The topographical analysis of the vascular ramification patterns (Regions of Residence) in combination with the cartographic system of Sectors of the neopallium respected the equine-specific surface architecture. It highlighted the distinct vascular supply areas and the particular Multiple-Supply Situations especially in Sectors presumably related to the equine Area motorica.

Abstract

Background: The extremely complex surface architecture of the equine brain does not allow a uniform transfer of anatomical data from other mammalian species, e.g., dog or cat. Rather, a special approach is required to elucidate the equine-specific patterns of cerebral vascular ramifications. Therefore, a novel cartographic system was applied. Prior attention was paid to the A. cerebri media (MCA) and to the A. corporis callosi (CA), as they spread over the widest part of the neopallium’s Facies convexa (i.e. the lateral and dorsal surface), thus being of particular interest in terms of surgical treatment of trauma of the skull and brain.

Materials and methods: The brains of 17 adult warmblood horses were studied. The neopallium’s Facies convexa was subdivided into 15 Sectors clearly delineated by the Primary Sulci and by related Auxiliary Lines. The courses and destinations of Main Branches (= branches of 1st or 2nd order, with a minimum caliber of 0.75 mm) of MCA and CA were topographically analyzed by means of superimposed graphical sketches.

Results: The MCA had six Main Branches (numbered in rostrocaudal direction); the CA had seven Main branches. The Main Branches of the MCA spread over the widest part of the Facies convexa, but never reached the rostral pole and the caudal pole of the neopallium. Clearly, the Main Branches of CA proceeded from the hemisphere’s medial side across the Margo dorsalis cerebri, thus supplying rostrodorsal and dorsal Sectors of the Facies convexa.

Conclusions: The topographical analysis of the vascular ramification patterns (Regions of Residence) in combination with the cartographic system of Sectors of the neopallium respected the equine-specific surface architecture. It highlighted the distinct vascular supply areas and the particular Multiple-Supply Situations especially in Sectors presumably related to the equine Area motorica.

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Keywords

horse, brain cartography, cerebrum, gyration, middle cerebral artery, callosal artery, ramification pattern

About this article
Title

The contribution of the middle cerebral artery and callosal artery to the vascularization of the Facies convexa of the brain in horses with reference to the equine-specific cartographic pattern of the neopallium

Journal

Folia Morphologica

Issue

Ahead of Print

Published online

2020-06-08

DOI

10.5603/FM.a2020.0065

Pubmed

32639577

Keywords

horse
brain cartography
cerebrum
gyration
middle cerebral artery
callosal artery
ramification pattern

Authors

L. Böing
F. Heun
H. Gasse

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