Three morphological types of motor nerve terminals in the rat diaphragm, and their possible innervation of different muscle fiber types
Three morphological types of motor nerve terminals in the rat diaphragm, and their possible innervation of different muscle fiber types
复制标题
大鼠膈肌运动神经末梢的三种形态类型及其对不同肌纤维类型的可能神经支配
DOI：
10.1007/bf00520719
复制
发表时间：
1973
期刊：
影响因子：
--
通讯作者：
O. Wærhaug
中科院分区：
文献类型：
--
作者：
H. Korneliussen;O. Wærhaug
SummaryWith methylene blue stain, 3 types of motor terminals were distinguished in the rat diaphragm. Type A terminals possess long slender branches and numerous minute terminal boutons, type C ones fewer thick branches and few large terminal boutons, and type B ones possess intermediate characteristics. In three animals, type A constitutes 20.5% (s.d. 2.5), B 20.0% (s.d. 3.0), and C 59.5% (s.d. 3.5). Type A terminals are often but not always larger than type C, type B terminals overlapping with both size ranges. Type A terminals tend to innervate thick muscle fibers and type C thin ones, type B innervating muscle fibers of intermediate width. The frequencies of occurrence of types A, B, and C terminals closely parallel the frequencies of so-called “white”, “intermediate”, and ”red” muscle fibers, respectively, as determined with a fat stain.It is concluded that the three morphological types of motor terminals each may innervate one of three types of muscle fibers.
