長胸神經(nervus thoracicus longus),又稱「外呼吸貝爾神經」(external respiratory nerve of Bell)[1],源自於第五至第七對頸脊神經(C5-7)的脊神經前支,主要支配前鋸肌。一般來說C5和C6會穿過中斜角肌,C7則會從該肌肉前方穿過,有時C7不會加入長胸神經。
結構
在大約 10% 的人群中,胸長神經也接受來自 C8 的神經供應。[3]
臨床意義
翼狀肩是指胸長神經損傷引起前鋸肌癱瘓,肩胛骨脊柱緣翹起呈翼狀。[4]乳房切除術、臂叢炎可能造成胸長神經的損傷,從而導致翼狀肩。[5]
其他圖像
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The right brachial plexus (infraclavicular portion) in the axillary fossa; viewed from below and in front.
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Brachial plexus
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Brachial plexus with courses of spinal nerves shown
參見
- 查爾斯·貝爾
- Backpack palsy
參考資料
外部連結
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