title: The Obex is not synonymous with the upper end of the central canal.
authors.forename: T H
authors.initials: TH
authors.lastname: Milhorat
authors.forename: J I
authors.initials: JI
authors.lastname: Miller
mesh_terms: D002574:Cervical Vertebrae / Q000033:anatomy & histology; D005333:Fetus; D006801:Humans; D013115:Spinal Canal / Q000033:anatomy & histology*; D009626:Terminology as Topic