| Project/Area Number |
25460257
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
General anatomy (including histology/embryology)
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| Research Institution | Tokyo Ariake University of Medical and Health Sciences |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2014: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 比較解剖学 / 肉眼解剖学 / 肩帯筋 / 支配神経 / 両生類 / ハ虫類 / 哺乳類 / 鳥類 / 霊長類 / ほ乳類 / 烏口骨 / 棘上筋 / 上腕二頭筋 |
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| Outline of Final Research Achievements |
This study contributes to clarify the evolution of the shoulder girdle, especially of the shoulder girdle muscles, which undergo the big morphological changes from amphibians to mammals. In summary, this study clarifies the following three problems. ①the evolutionary changes of the supracoracoid and the coracobrachialis muscle into the supra/infra spinatus and the biceps brachii muscles following from the reduction of the coracoid bone and newly formation of the scapular spine in mammals, ②the differentiation of the dorsal shoulder muscles, which play an important role connecting the shoulder girdle with the trunk in tetrapods, and the morphological significance of the dorsal shoulder muscles as the trunk muscles by observing precisely the origin of their innervating nerve branches, ③the phylogenetic differentiation of the subscapularis, teres major and latissimus dorsi muscles and the multiple origin of the subscapularis muscle in mammals.
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