Myofibrous Organization on the Cross-Sectional Area of the M.adductor longus from Man
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概要
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Myofibrous organization of the adductor longus muscle was investigated by making observation of the number of muscle fibers, thickness of individual fibers, etc.in the cross-sectional area of venter with maximum diameter of right adductor longus specimens from fifteen cases, eight males and seven females.The results obtained were compared with the previously reported pertinent data of the other muscles.<BR>The M.adductor longus of man was noted to range in the total number of muscle fibers from 153, 335 to 339, 150, in number of muscle fibers per sq.m.m.from 347 to 1203, and in thickness of individual muscle fibers from 263.9 to 2, 687.8μ2 respectively.We have shown that males generally show a greater total number of muscle fibers, and larger thickness of individual muscle fibers, and a smaller number of muscle fibers per sq.m.m.than females, and that males tends to be larger in the individual differences in each of these respects than females.<BR>We have shown that the cases of advanced age show a larger number of muscle fibers per sq.m.m., and a smaller thickness of muscle fibers than younger cases, but that a old male shows the highest total number of muscle fibers.<BR>Comparing the myofibrous organization of adductor longus with the other muscles, we find that the myofibrous organization of this muscle is similar to that of biceps brachii, and conjecture that interfibrous connective tissue is larger than that in the biceps brachii.We would suggest from these facts that the adductor longus shows the characteristics of the tonic muscles.<BR>The distribution pattern of minor diameters shows double-or triple-peaked curves of distribution with the highest median peak in the muscles with greater, minor diameter and displays the curve with highest left peak in the muscles with shorter minor diameter.These changes of the distribution patterns with respect to minor diameter accompained with reduced thickness in thismuscle is in contrast with that of M.rectus abdominis.
- 日本人類学会の論文
日本人類学会 | 論文
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