Sternocleidomastoid
Common carotid artery
Internal jugular vein
Vagus nerve
External carotid artery
Internal carotid artery
Carotid sinus
Carotid body
Hypoglossal nerve
Nerve to thyrohyoid
Thyrohyoid
Superior thyroid artery
Sternohyoid
Ansa cervicalis 
Superior root
Inferior root