"origin: superior nuchal line, inion, nuchal ligament, and spinous processes of C7-T12 vertebrae"
"insertion: clavicle and scapula"
"innervation: accessory nerve (CN XI)"
"action: complex movements of the scapula and neck"
"Origin "
"Action "
"scapula: occipital fibres insert onto the medial acromion and superior lip of scapular spine, while the lower fibres from the T6-T12 spinous processes insert onto the medial end of the spine"
"spinal part (C1-C5 or C6) of the accessory nerve (cranial nerve XI) provides motor supply"
Expected headings
"Origin "
"Insertion"
"Action "