Anterior arch of atlas

Bone: Anterior arch of the atlas

First cervical vertebra, or atlas. (Anter. arch visible at top.)
Latin	arcus anterior atlantis

The anterior arch of the atlas forms about one-fifth of the ring of the atlas: its anterior surface is convex, and presents at its center the anterior tubercle for the attachment of the Longus colli muscles; posteriorly it is concave, and marked by a smooth, oval or circular facet (fovea dentis), for articulation with the odontoid process (dens) of the axis.

Additional images

External links

Bioweb at UWLAX aplab

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

Bones of torso (TA A02.2,3, GA 2.96–128)

Vertebra

General structures	body of vertebra, vertebral arch (pedicle, lamina, vertebral notch), foramina (vertebral, intervertebral), processes (transverse, articular/zygapophysis, spinous), spinal canal

Cervical vertebrae	Uncinate process of vertebra · Transverse foramen · Anterior tubercle · Carotid tubercle · Posterior tubercle C1 (lateral mass, anterior arch, posterior arch), C2 (dens), C3, C4, C5, C6, C7

Thoracic vertebrae	T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12 costal facets (superior, inferior, transverse) · Uncinate process of vertebra

Lumbar vertebrae	L1, L2, L3, L4, L5, processes (accessory, mammillary)

Sacrum	Base: sacral promontory · ala of sacrum Lateral surface: sacral tuberosity · pelvic surface (anterior sacral foramina) Dorsal surface: posterior sacral foramina · median sacral crest · medial sacral crest · lateral sacral crest · sacral canal (sacral hiatus)

Coccyx	Coccygeal cornu

Thoracic skeleton

Rib	specific ribs (1, 2, 9, 10, 11, 12, true – 1–7, false – 8–12, floating – 11–12) · parts (Angle, Tubercle, Costal groove, Neck, Head)

Sternum	Suprasternal notch, Manubrium, Sternal angle, Body of sternum, Xiphisternal joint, Xiphoid process

Thoracic cage	Superior thoracic aperture · Inferior thoracic aperture · Intercostal space · Costal margin · Infrasternal angle

M: BON/CAR

anat(c/f/k/f, u, t/p, l)/phys/devp/cell

noco/cong/tumr, sysi/epon, injr

proc, drug(M5)