TOPOGRAPHICAL LOCALIZATION OF MOTOR ENDPLATES IN CRYOSECTIONS OF WHOLE HUMAN MUSCLES
TOPOGRAPHICAL LOCALIZATION OF MOTOR ENDPLATES IN CRYOSECTIONS OF WHOLE HUMAN MUSCLES
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DOI：
10.1002/mus.880070406
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发表时间：
1984-01-01
期刊：
影响因子：
3.4
通讯作者：
STALBERG, E
中科院分区：
文献类型：
--
作者：
AQUILONIUS, SM;ASKMARK, H;STALBERG, E
用胆碱酯酶染色法研究了成人肱二头肌、胫骨前肌和缝匠肌运动终板的分布。一种特殊的冷冻技术被用来防止肌肉在重型低温切片机上切片之前破裂。对大量肱二头肌和胫骨前肌冰冻切片的结果进行计算机分析，并重建了终板在不同切面上的分布。在肱二头肌中，终板形成一个相当明显的，略呈V形的带，穿过两个头的中间。胫骨前肌的终板大多数呈沿着肌面分布。在肌中部的纵切面上，呈抛物线形，其顶点在肌的近端。在缝匠肌中，终板分散在整个肌肉中，未观察到终板带。这一发现与30年前对幼儿和死产婴儿肌肉的研究结果一致。
The distribution of motor endplates in biceps brachii, tibialis anterior and sartorius muscles from human adults was studied by staining longitudinal cryosections of whole muscle for cholinesterase. A special freezing technique was used to prevent the muscle from cracking before sectioning on a heavy cryostat microtome. The results from a large number of cryosections from biceps brachii and tibialis anterior muscles were analyzed by a computer and the topographical distributions of endplates in different views of the muscles were reconstructed. In the biceps brachii muscle, the endplates formed a fairly distinct, slightly V-shaped band through the middle of the 2 heads. In the tibialis anterior muscle, the majority of the endplates were superficially distributed along the whole muscle. In the longitudinal sections from the middle part of the muscle, they gave the pattern of a parabola with its apex at the proximal end of the muscle. In the sartorius muscle, the endplates were scattered throughout the muscle and no endplate band was observed. The findings are in accordance with results obtained 30 yr ago in investigations of muscle from small children and stillborn infants.