前锯肌(英语:Serratus anterior muscle),是将肩胛骨内侧向前拉的胸部肌肉。
每组两块的前锯肌从胸前部的肋骨开始,围绕体侧延伸到肩胛骨。前锯肌可将肩胛骨内侧向前拉而外翻,“锯肌”一词描述此肌成锯齿形的,也就是参差不齐的。
结构
前锯肌受颈丛(C5-C7)胸长神经的支配。如果胸长神经受损,则会表现为翼状肩,即肩胛骨脊柱缘因失去牵拉而翘起,形成似翅膀的样的畸形。[1][2]
前锯肌的血液供应来自胸上动脉、胸外侧动脉和胸背动脉。[3]
变异
参考
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