Osawa K, Maeda N, Sato M, Kawasaki T, Masuda T, Yamamoto Y, Hakeda Y, Ukai M, Watanabe Y, Suwa T
Department of Oral Diagnosis, Meikai University, Saitama, Japan.
Anat Anz. 1988;167(4):253-7.
The formation of the annulospiral endings of Ia fibers in muscle spindles was investigated in the temporal muscle of developing mice. From 15 to 20 d after birth, there were only a few spindles with "++" sensory endings. With growth of mice, the primary endings of the Ia fiber began to develop its spiral endings. And by the 30th postnatal day (that is, after weaning), almost all of the Ia fibers had completely coiled endings though the formation was still continuing in some spindles at this time. Formation of the annulospiral endings of the Ia fibers of muscle spindles in the temporal muscle was completed earlier than that of fibers in the spindles in the masseter muscle.
在发育中小鼠的颞肌中研究了肌梭内Ia纤维环旋末梢的形成。出生后15至20天，只有少数肌梭具有“++”感觉末梢。随着小鼠的生长，Ia纤维的初级末梢开始形成其螺旋末梢。到出生后第30天（即断奶后），几乎所有Ia纤维都具有完全盘绕的末梢，尽管此时在一些肌梭中形成仍在继续。颞肌中肌梭的Ia纤维环旋末梢的形成比咬肌中肌梭的纤维更早完成。
