Knowledge Base
- Spinal accessory nerve (XI) innervates sternocleidomastoid ( Rotation of head to
opposite side) and trapezius (Shrugging of shoulder).
- Neck flexors and extensors are innervated by cervical nerves
- Anatomy of 11th cranial nerve
- Disease affecting 11th cranial nerve
- Systemic diseases affecting neck muscles
- Myasthenia gravis
- Myopathy
- Motor neurone disease