Dias P L
J Anat. 1979 Sep;129(Pt 2):399-404.
The projection areas of vitally stained motor end plates in normal and tenotomized fast and slow twitch muscles of the rabbit hind limb were measured. There was a significant reduction in the mean projection area of the motor end plates of the slow muscle after tenotomy. There was no significant change in the projection area of the FDL or gastrocnemius motor end plates after tenotomy. After tenotomy the deep (slow) component of the tibialis anterior showed an increase in the mean projection area of its end plates and so approached the faster superficial component in this respect. It appears therefore, that the altered pattern of activity of the slow motoneurons (which is known to occur after tenotomy) is associated with a change in the end plate size towards that normally found in muscles innervated by phasic motoneurons.
对家兔后肢正常及经肌腱切断术处理的快、慢肌中经活体染色的运动终板投射区域进行了测量。肌腱切断术后，慢肌运动终板的平均投射区域显著减小。肌腱切断术后，趾长屈肌（FDL）或腓肠肌运动终板的投射区域无显著变化。肌腱切断术后，胫骨前肌的深部（慢）成分其终板的平均投射区域增加，因此在这方面接近较快的浅部成分。因此，似乎慢运动神经元活动模式的改变（已知在肌腱切断术后会发生）与终板大小的变化有关，这种变化趋向于在由相位性运动神经元支配的肌肉中通常所发现的情况。
