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副神经(spinal accessory nerve(SAN))为第Ⅺ对脑神经,支配胸锁乳突肌、斜方肌和咽喉肌,它在手术或创伤中损伤而引起其支配区的功能障碍不可忽视,牢固掌握SAN的解剖对于颌面外
Spinal accessory nerve (SAN) is the Ⅺth cranial nerve, which is responsible for sternocleidomastoid, trapezius and laryngeal muscles. Its dysfunction caused by surgery or trauma and damage to its dominant area can not be ignored. Master SAN anatomy for maxillofacial