These types of cramps usually effect the smaller muscle groups such as the jaw, eyelids, larynx, etc.
这种抽筋通常发生在小肌群，比如下颚、眼皮、喉部等。
The fresh posterior crico-arytenoid muscle of human larynx is taken in the research to find the morphological features of motor end-plates.
取新鲜人喉标本，对环杓后肌进行纵切片，应用银浸法研究其运动神经终末的形态特点。
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