Atlas is the most cranial vertebra in the vertebral column supporting the skull via condylar surface.
Atlas. Anterior aspect.
The atlas is the flattest and most mobile vertebra, as it rotates together with the skull
The list of terms:Arcus anterior atlantis – Anterior arch of atlas Tuberculum anterius – Anterior tubercle of atlas Arcus posterior atlantis – Posterior arch of atlas Processus transversus – Transverse process Foramen transversarium Massa lateralis atlantis – Lateral mass of atlas Facies articularis inferior – Inferior articular facet
Atlas. The top aspect.
Note the absence of the corpus and presence of two massive structures made by fused superior and inferior articulatory processes—massae laterales.
The list of terms:Arcus anterior – Anterior arch of atlas Tuberculum anterius – Anterior tubercle Fovea dentis – Dental fovea of atlas Arcus posterior atlantis – Posterior arch of atlas Tuberculum posterius – Posterior tubercle Sulcus arteriae vertebralis – Groove for vertebral artery Foramen vertebrale – Vertebral foramen Massa lateralis atlantis – Lateral mass of atlas Processus transversus – Transverse process Foramen transversarium
Atlas. Inferior aspect.
The shape of the inferior articular surface is almost flat in contrast with the concave superior articular surface.
The list of terms:Arcus anterior – Anterior arch of atlas Tuberculum anterius – Anterior tubercle Fovea dentis – Dental fovea of atlas Arcus posterior atlantis – Posterior arch of atlas Tuberculum posterius – Posterior tubercle Foramen vertebrale – Vertebral foramen Massa lateralis atlantis – Lateral mass of atlas Facies articularis inferior – Inferior articular facet Processus transversus – Transverse process Foramen transversarium
Atlas. Superolateral aspect.
The list of terms:Arcus anterior atlantis – Anterior arch of atlas Tuberculum anterius – Anterior tubercle of atlas Arcus posterior atlantis – Posterior arch of atlas Sulcus arteriae vertebralis – Groove for vertebral artery Foramen vertebrale – Vertebral foramen Massa lateralis atlantis – Lateral mass of atlas Facies articularis superior – Superior articular facet Processus transversus – Transverse process Foramen transversariumAtlas. 360° rotation.
First published: Jan/2019
Last update: 24/Nov/2020