Assertion: accessory nerve's root | /r/CapableOf | achieve the sternocleidomastoid
Facets:
Source sentences:
text: Within the jugular foramen, cranial roots mix with vagus nerve at the level of the superior vagal ganglion, while spinal roots descend laterally to the internal carotid artery and internal jugular vein, and achieve the sternocleidomastoid and trapezius muscle  (Fig. 10).