Estudo anatomico da arteria mediana do corpo caloso em cerebros humanos

Lemos, Vicente Paulo Jorge

doi:10.1590/S0004-282X1978000100004

Resumos

A freqüência e os padrões de ramificação da artéria mediana do corpo caloso foram determinados em 130 encéfalos humanos adultos, de nordestinos brasileiros, com o auxílio de lupa estereoscópica. A artéria esteve presente em 89,2(116/130) dos casos, sendo que ela constituiu um vaso calibroso em 20% (26/130) dos encéfalos examinados. Em todos os exemplares, a artéria mediana do corpo caloso, calibrosa ou não, sempre originou ramos bilaterais para ambos os hemisférios, inexistindo os tipos uni-hemisférios exclusivos. Foi notada a grande semelhança entre o padrão bi-hemisférico típico e os padrões da artéria cerebral anterior ímpar dos animais inferiores, sem contudo ser possível estabelecer relação de identidade entre os dois vasos. Outrossim foi formulada uma hipótese segundo a qual a artéria mediana do corpo caloso teria evoluido a partir da fusão dos ramos da artéria anterior ímpar, destinados ao suprimento do ramo caloso.

The neuroanatomic study of the median artery of the corpus callosum was performed by simple and careful dissection in 130 adult brains from northeasterner brazilians. The observation was realized with stereoscopic magnifying glass. The median artery of the corpus callosum was present in the 89,2% (116/ 130) of the cases. The artery exibited a gross caliber in 20% (26/130) of the specimens with the following patterns: a) in twelve brains (six on the right side and six on the left side) the median artery of the corpus callosum displaied a "predominant" unihemispheric pattern with regard to the distribution of their branches, and supplied the territory of the pericallosal artery of the correspondent side. The term "predominant" was used considering that in all the cases the artery supplied branches to the medial surfaces of both the cerebral hemispheres; b) in ten examples the median artery of the corpus callosum was a single trunk which then passed into the longitudinal cerebral fissure, and as an unpaired artery it supplied branches to the medial surfaces of both hemispheres; c) finally, in four cases, the median artery of the corpus callosum, at the level of the rostrum of the corpus callosum originated the two pericallosal arteries. With regard at filogenetic origin of the median artery of the corpus callosum it has been formulated the hypothesis that the artery possibly was originated by fusion of the callosal branches of the unpaired anterior cerebral artery of lower forms.

Vicente Paulo Jorge Lemos

Professor Assistente responsável pelo Setor de Neuro-anatomia. Departamento de Morfologia do Centro de Ciências da Saúde da Universidade Federal do Ceará (Fortaleza, CE)

RESUMO

A freqüência e os padrões de ramificação da artéria mediana do corpo caloso foram determinados em 130 encéfalos humanos adultos, de nordestinos brasileiros, com o auxílio de lupa estereoscópica. A artéria esteve presente em 89,2(116/130) dos casos, sendo que ela constituiu um vaso calibroso em 20% (26/130) dos encéfalos examinados. Em todos os exemplares, a artéria mediana do corpo caloso, calibrosa ou não, sempre originou ramos bilaterais para ambos os hemisférios, inexistindo os tipos uni-hemisférios exclusivos. Foi notada a grande semelhança entre o padrão bi-hemisférico típico e os padrões da artéria cerebral anterior ímpar dos animais inferiores, sem contudo ser possível estabelecer relação de identidade entre os dois vasos. Outrossim foi formulada uma hipótese segundo a qual a artéria mediana do corpo caloso teria evoluido a partir da fusão dos ramos da artéria anterior ímpar, destinados ao suprimento do ramo caloso.

SUMMARY

The neuroanatomic study of the median artery of the corpus callosum was performed by simple and careful dissection in 130 adult brains from northeasterner brazilians. The observation was realized with stereoscopic magnifying glass.

The median artery of the corpus callosum was present in the 89,2% (116/ 130) of the cases. The artery exibited a gross caliber in 20% (26/130) of the specimens with the following patterns: a) in twelve brains (six on the right side and six on the left side) the median artery of the corpus callosum displaied a "predominant" unihemispheric pattern with regard to the distribution of their branches, and supplied the territory of the pericallosal artery of the correspondent side. The term "predominant" was used considering that in all the cases the artery supplied branches to the medial surfaces of both the cerebral hemispheres; b) in ten examples the median artery of the corpus callosum was a single trunk which then passed into the longitudinal cerebral fissure, and as an unpaired artery it supplied branches to the medial surfaces of both hemispheres; c) finally, in four cases, the median artery of the corpus callosum, at the level of the rostrum of the corpus callosum originated the two pericallosal arteries.

With regard at filogenetic origin of the median artery of the corpus callosum it has been formulated the hypothesis that the artery possibly was originated by fusion of the callosal branches of the unpaired anterior cerebral artery of lower forms.

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9. LOOTEN, J. E. Recherches anatomiques sur la circulation arterielle du cerveau. These. Citado por LAZORTHES, G.; GAUBERT, J. & POULHES, J.8.

Agradecimentos O autor agradece a colaboração da Sra. Vilma Rabelo Brito na composição datilográfica do original.

Departamento de Morfologia, Setor de Neuroanatomia Centro de Ciências da Saúde, Universidade Federal do Ceará Caixa Postal 688 60000 Fortaleza, CE Brasil.

1. ABBIE, A. A. The morphology of the fore-brain arteries with especial reference to the evolution of the basal ganglia, J. Anat. (London), 68:433, 1934.
2. ADACHI, B. & HASEBE, K. Das Arteriensystem der Japaner. Kyoto, Japan, 1929, vol. 1. Apud KRAYENBUHL, H. & YASARGIL, M. G. Radiological anatomy and topography of the cerebral arteries In: VINKEN, P. J. & BRUYN, G. W. Handbook Clinical Neurology. Amsterdan, North-Holland, 1972, vol. 11, Part I, pág. 80.
3. ALPERS, B. J.; BERRY, R. G. & PADDISON, R. M. Anatomical studies of the circle of Willis in normal brain. Arch. Neurol. Psychiat. (Chicago) 81:409, 1959.
4. BAPTISTA, A. G. Studies on the arteries of the brain. The anterior cerebral artery: some anatomic features and their clinical implications. Neurology (Minneapolis) 13:825, 1963.
5. BLACKBURN, J. W. Anomalies of the encephalic arteries among the insane. J. Comp. Neurol. Psychol. 17:493, 1970.
6. BROWN, J. O. The morphology of circulus arteriosus cerebri in rats. Anat. Rec. 156:99, 1966.
7. KASSEL, N. F. & LANGFITT. T. W. Variations in the circle of Willis in Macaca mulata. Anat. Rec. 152:257, 1965.
8. LAZORTHES, G.; GAUBERT, J. & POULHES, J. La distribution centrale et corticale de 1'artère cérébrale antérieure. Étude anatomique et incidences neurochirurgicales. Neurochirurgie (Paris) 2:237, 1956.
10. MOFFAT, D. B. The development of the anterior cerebral artery and its related vessels in the rat. Amer. J. Anatomy (Philadelphia) 108:17, 1961.
11. VON MITTERWALINER, F. Variations statistische Untersuchungen an den basalcn Hirngefassen. Acta Anat. (Basel) 24:51, 1955.
12. WATTS, J. W. A comparative study of the anterior cerebral artery and the circle of Willis in primates. J. Anat. (London) 68:534, 1934.
13. WOLF-HEIDEGGER, G. Atlas de Anatomia Humana. Versão brasileira, 2Ş edição. Guanabara-Koogan, Rio de Janeiro, 1972.

Estudo anatomico da arteria mediana do corpo caloso em cerebros humanos

Neuroanatomic study of the median artery of the corpus callosum in adult human brains

Datas de Publicação

Publicação nesta coleção
28 Ago 2012
Data do Fascículo
Mar 1978

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] 1. ABBIE, A. A. The morphology of the fore-brain arteries with especial reference to the evolution of the basal ganglia, J. Anat. (London), 68:433, 1934.

[2] 2. ADACHI, B. & HASEBE, K. Das Arteriensystem der Japaner. Kyoto, Japan, 1929, vol. 1. Apud KRAYENBUHL, H. & YASARGIL, M. G. Radiological anatomy and topography of the cerebral arteries In: VINKEN, P. J. & BRUYN, G. W. Handbook Clinical Neurology. Amsterdan, North-Holland, 1972, vol. 11, Part I, pág. 80.

[3] 3. ALPERS, B. J.; BERRY, R. G. & PADDISON, R. M. Anatomical studies of the circle of Willis in normal brain. Arch. Neurol. Psychiat. (Chicago) 81:409, 1959.

[4] 4. BAPTISTA, A. G. Studies on the arteries of the brain. The anterior cerebral artery: some anatomic features and their clinical implications. Neurology (Minneapolis) 13:825, 1963.

[5] 5. BLACKBURN, J. W. Anomalies of the encephalic arteries among the insane. J. Comp. Neurol. Psychol. 17:493, 1970.

[6] 6. BROWN, J. O. The morphology of circulus arteriosus cerebri in rats. Anat. Rec. 156:99, 1966.

[7] 7. KASSEL, N. F. & LANGFITT. T. W. Variations in the circle of Willis in Macaca mulata. Anat. Rec. 152:257, 1965.

[8] 8. LAZORTHES, G.; GAUBERT, J. & POULHES, J. La distribution centrale et corticale de 1'artère cérébrale antérieure. Étude anatomique et incidences neurochirurgicales. Neurochirurgie (Paris) 2:237, 1956.

[9] 10. MOFFAT, D. B. The development of the anterior cerebral artery and its related vessels in the rat. Amer. J. Anatomy (Philadelphia) 108:17, 1961.

[10] 11. VON MITTERWALINER, F. Variations statistische Untersuchungen an den basalcn Hirngefassen. Acta Anat. (Basel) 24:51, 1955.

[11] 12. WATTS, J. W. A comparative study of the anterior cerebral artery and the circle of Willis in primates. J. Anat. (London) 68:534, 1934.

[12] 13. WOLF-HEIDEGGER, G. Atlas de Anatomia Humana. Versão brasileira, 2Ş edição. Guanabara-Koogan, Rio de Janeiro, 1972.