Die Größe der motorischen Einheiten der unterschiedlich innervierten Augenmuskelfasern

Die Größe der motorischen Einheiten der unterschiedlich innervierten Augenmuskelfasern
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发动机内部的整体结构

DOI:
10.1007/978-3-642-48446-9_2
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发表时间:
1978
期刊:
影响因子:
6.4
通讯作者:
H. Mühlendyck
H. Mühlendyck
中科院分区:
医学2区
文献类型:
--
作者:
H. Mühlendyck

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迄今为止,运动单位的大小,即由一个神经元提供的肌纤维的数量,都是基于这样的假设计算的:所有的眼肌纤维都贯穿整个肌肉的长度,并且只存在一种形式的肌纤维。然而,在肌腹中,发现了比附着处多得多的肌纤维,并且可以区分单神经支配的肌纤维和多神经支配的肌纤维。前者由粗神经纤维(大于8 μ)提供,后者由细神经纤维(小于8 μ)提供。
The size of the motor units, i.e. the number of muscle fibres supplied by one neuron, was hitherto calculated on the assumption that all eye-muscle fibres ran through the entire length of the muscle, and that only one form of muscle fibre was present. However, in the muscle-belly, substantially more muscle fibres have been found than at the insertion, and one can distinguish between the singly and multiply innervated muscle fibres. The first are supplied by thick nerve fibres (more than 8 μ), and the latter by thin nerve fibres (less than 8 μ).