Walro J M, Kucera J
Exp Brain Res. 1984;56(1):187-92. doi: 10.1007/BF00237456.
Distributions of motor axons to different types of intrafusal fiber were reconstructed from serial 1-micron thick transverse sections of six poles of muscle spindle in the rat soleus. Motor axons innervated (dynamic) bag1 fibers, or (static) bag2 fibers in conjunction with chain fibers. However, approximately forty percent of axons that supplied the spindles synapsed on both bag1 and bag2 or bag1 and chain fibers. The significance of this co-innervation of dynamic and static intrafusal fibers is discussed relative to the general organization and function of mammalian spindles.
从大鼠比目鱼肌肌梭六个极的连续1微米厚的横切片中重建了运动轴突到不同类型肌梭内纤维的分布。运动轴突支配（动态）袋1纤维，或（静态）袋2纤维以及链纤维。然而，大约40%供应肌梭的轴突在袋1和袋2纤维或袋1和链纤维上都形成了突触。相对于哺乳动物肌梭的一般组织结构和功能，讨论了动态和静态肌梭内纤维这种共同支配的意义。
