Long thoracic nerve

The long thoracic nerve (external respiratory nerve of Bell; posterior thoracic nerve) supplies the serratus anterior muscle. This nerve characteristically arises from the anterior rami of three spinal nerve roots: the fifth, sixth, and seventh cervical nerves (C5-C7) although the root from C7 may be absent. The roots from C5 and C6 pierce through the scalenus medius, while the C7 root passes in front of the muscle.

单词	Long thoracic nerve
释义	Long thoracic nerve 英语百科 Long thoracic nerve The long thoracic nerve (external respiratory nerve of Bell; posterior thoracic nerve) supplies the serratus anterior muscle. This nerve characteristically arises from the anterior rami of three spinal nerve roots: the fifth, sixth, and seventh cervical nerves (C5-C7) although the root from C7 may be absent. The roots from C5 and C6 pierce through the scalenus medius, while the C7 root passes in front of the muscle.
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