"origin: manubrium, medial clavicle"
"insertion: mastoid process, superior nuchal line"
"innervation: accessory nerve (CN XI)"
"action: lateral flexion, flexion and rotation of the head on the neck"
"Origin "
"Action "
Expected headings
"Origin "
"Course"
"Insertion"
"Action "
"action: lateral flexion, flexion and rotation of the head on the neck"