Cervical spine

Anterior

Anterior arch (with anterior tubercle)

Body

Inferior articular process

Lamina

Lateral mass

Odontoid process (dens)-

Posterior

Posterior arch (with posterior tubercle)

Sectional view of odontoid process (dens) projecting through this opening

Spinous process

Superior articular process

Superior facet (part of atlantooccipital joint with skull)

Superior particular process

Transverse atlantal ligament

Transverse foramen

Transverse process