"the odontoid process and atlanto-axial joint are best appreciated in an AP open-mouth view"
Expected headings
"Anteriorly"
"Posteriorly"
"Laterally"
"Supero-posteriorly"
"Centrally"
"The axis is the second cervical vertebra, commonly called C2. It is an atypical cervical vertebra with unique features and important relations that make it easily recognisable. Its most prominent feature is the odontoid process (also known as the dens or peg), which is embryologically the body of the atlas (C1) 1,2. It plays an important role in the rotation of the head, with the majority of movement occurring around the dens and at the atlanto-axial joint. There are five primary and two secondary ossification centres, which are discussed below in more detail 2-4."
"There are five primary and two secondary ossification centres in the axis (C2)."
"lamina, thick and rounded"
"spinous process, large and bifid"