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神经肌肉接点

神經肌肉接點
電子顯微鏡 下的神經肌肉接點。T是軸突終端,M是肌肉纖維。箭頭示出了交界與褶的基底層。比例為0.3微米。 來源:NIMH
神經肌肉接點細節圖:
1. 軸突末梢
2. 肌膜
3. 突觸小泡
4. 菸鹼型乙酰膽鹼受體
5. 線粒體
基本信息
系統神經系統
标识字符
拉丁文synapssis neuromuscularis; junctio neuromuscularis
MeSHD009469
THH2.00.06.1.02001
FMAFMA:61803
解剖學術語


神经肌肉接点(英文:Neuromuscular junction)又称神经肌肉接头[1]神經肌肉會合處[2],是传出神经纤维末梢与肌肉纖維之间形成的突触性连接,也是化学联络点,与神经元之间的突触功能相同[3][4][5]

神经纤维分为许多末梢分支,每个分支嵌入肌细胞膜上称为運動终板的凹陷中,因此“突触前膜”为运动神经末梢,“突触后膜”为肌纤维局部膨大形成的运动终板;运动终板内容纳数以千计的受体(长形的蛋白质分子,形成穿过膜的通道)。当运动神经电兴奋促使前膜释放神经递质,神经递质与终板上受体结合,就可实现横纹肌的兴奋收缩。

参考资料

  1. ^ 存档副本. [2022-07-24]. (原始内容存档于2022-10-18). 
  2. ^ 存档副本. [2022-07-24]. (原始内容存档于2022-10-18). 
  3. ^ Purves, Dale; Augustine, George J.; Fitzpatrick, David; Katz, Lawrence C.; LaMantia, Anthony-Samuel; McNamara, James O.; Williams, S. Mark. Motor Neuron-Muscle Relationships. Neuroscience. 2nd edition. 2001 [2021-03-06]. (原始内容存档于2021-04-09) (英语). 
  4. ^ Omar, Abdillahi; Marwaha, Komal; Bollu, Pradeep C. Physiology, Neuromuscular Junction. StatPearls. Treasure Island (FL): StatPearls Publishing. 2021 [2021-03-06]. PMID 29261907. (原始内容存档于2021-04-09). 
  5. ^ Neuromuscular Junction - an overview. Science Direct. [2021-03-06]. (原始内容存档于2021-04-09) (英语). 

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神经肌肉接点
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