SLOW FIBRES IN EXTRAOCULAR MUSCLES OF CAT
SLOW FIBRES IN EXTRAOCULAR MUSCLES OF CAT
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DOI：
10.1113/jphysiol.1963.sp007296
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发表时间：
1963-01-01
影响因子：
5.5
通讯作者：
PILAR, G
中科院分区：
文献类型：
--
作者：
HESS, A;PILAR, G
使用光学和电子显微镜，在猫的所有眼外肌中都发现了具有多个和单个神经末梢的 Felderstruktur 肌纤维，上斜肌的细胞内记录可以区分两种肌纤维，一种具有抽搐肌纤维的特征，另一种具有类似于青蛙和小鸡中描述的慢肌纤维的特征。对神经刺激期间和几乎所有抽搐纤维阻滞后张力变化的机械记录表明，剩余的慢纤维会出现“挛缩”反应。形态学和生理学数据的相关性进一步证明，具有弥漫性、轮廓不清的原纤维、不完全被肌浆网（Felderstruktur）包围以及具有多个分布的神经末梢的纤维在生理上属于慢纤维类型。
Using light and electron microscopes, Felderstruktur muscle fibres with multiple as well as single nerve endings have been found in all the extraocular muscles of the cat, Intracellular recording in the superior oblique muscle allows the distinction of two kinds of muscle fibres one with the characteristics of twitch muscle fibres and the other with the characteristics of slow muscle fibres similar to those described in the frog and chick. Mechanical recording of tension change during nerve stimulation and after block of virtually all twitch fibres shows that the remaining slow fibres respond with a "contracture". Correlation of the morphological and physiological data provides further evidence that the fibres with diffuse, poorly delineated fibrils incompletely surrounded by sarcoplasmic reticulum (Felderstruktur) and with multiple-distributed nerve endings are physiologically of the slow-fibre type.