In most nerves, there are both afferent or sensory nerve fibers and efferent or motor fibers.

在多数神经，有输入或感觉神经纤维和传出或马达纤维。

youdao

Results: There were about 8893 motor fibers in C7, 3010 and 5883 in anterior and posterior division respectively.

结果：人类颈7神经根含运动纤维约8893根，其中前股3010根，后股5883根；

youdao

Either of the ninth pair of cranial nerves that contain both sensory and motor fibers and supply the tongue, soft palate, pharynx, and parotid gland.

第九对脑神经之一，它有感觉和运动神经，支配舌、软颚、腮腺和咽。

youdao

It blocks motor neurons from affecting muscle fibers.

它能阻碍运动神经元对肌肉纤维的支配

耶鲁公开课 - 心理学导论课程节选

To compensate for the resulting neuron shortage, the remaining neurons sprout new fibers, and the surviving motor units become enlarged.

CNN: Post-polio syndrome