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"View from above of the Atlas, the first cervical vertebra."—Finley, 1917

Atlas

"View from above of the Atlas, the first cervical vertebra."—Finley, 1917

Atlas, the Titan condemned to hold the Earth on his shoulders.

Atlas

Atlas, the Titan condemned to hold the Earth on his shoulders.

The atlas, viewed from above.

Atlas

The atlas, viewed from above.

First cervical vertebra, or atlas.

Atlas

First cervical vertebra, or atlas.

The atlas, which is the first cervical vertebra. Labels: Aa, body of atlas, D, odontoid process of axis; Fas, facet on upper side of atlas with which the skull articulates; L, transverse ligament; Frt, vertebral foramen.

The Atlas (1st Cervical Vertebra)

The atlas, which is the first cervical vertebra. Labels: Aa, body of atlas, D, odontoid process of axis;…

The atlas from above.

Atlas from Above

The atlas from above.

The atlas from above. Labels: 1, posterior arch; 2, transverse process; 3, tubercle for transverse ligament; 4, anterior arch; 5, anterior tubercle; 6, surface for articulation with odontoid process; 7, superior articular process; 8, foramen for vertebral artery; 9, groove for vertebral artery; 10, posterior tubercle.

Atlas from Above

The atlas from above. Labels: 1, posterior arch; 2, transverse process; 3, tubercle for transverse ligament;…

The atlas from below.

Atlas from Below

The atlas from below.

Unique case of absence of the anterior arch of the atlas.

Atlas Without Anterior Arch

Unique case of absence of the anterior arch of the atlas.

B, the first cervical vertebra, the atlas. A, the atlas, and the second cervical vertebra, the axis; e, the odontoid process; c. the foramen.

The First and Second Cervical Vertebrae

B, the first cervical vertebra, the atlas. A, the atlas, and the second cervical vertebra, the axis;…

A famous journalist.

Murat Halstead

A famous journalist.

Dissection from behind the ligaments connecting the occipital bone, the atlas, and the axis with each other.

Ligaments of the Occipital Bone

Dissection from behind the ligaments connecting the occipital bone, the atlas, and the axis with each…

The articulation between the odontoid process and the atlas.

Odontoid Process

The articulation between the odontoid process and the atlas.

"Fig 56 - Axial skeleton, minus the skull, of an owl, Asio wilsonianus, life size; from nature by Dr. R.W. Shufeldt, USA. at, atlas; ax,axis; cv, cervical vertebrae; c, c', cervical ribs, or free pleurapophyses; dv, dorsal vertebrae, excepting the last one, which joins the sacrum; R, two of the six true ribs (pleurapophyses), whereof sr is sacral; u, one of the five uncinate processes or epipleura; cr, two of the six sternal ribs(haemapophyses), whereof the sixth floats; p, pelvic or sacral region of the spine, comprehending one dorsal, and several lumbar, sacral proper, and urosacral vertebrae; I ilium; Is, ischium; P pubis; a, acetabulum; in, ischio-iliac foremen; o, obturator foramen; clv, caudal or coccygeal vertebrae, whereof py is the pygostyle; s, scapula; ohs, os humero-scapulare; cl, clavicle; C, coracoid; S, sternum." Elliot Coues, 1884

Axial Skeleton

"Fig 56 - Axial skeleton, minus the skull, of an owl, Asio wilsonianus, life size; from nature by Dr.…

The atlas, the uppermost vertebra of the spinal column. Labels: 1, anterior tubercle; 2, articular face for the dentata; 3, posterior surface of spinal canal; 4, 4, intervertebral notch; 5, transverse process; 6, foramen for vertebral artery; 7, superior oblique process; 8, tubercle for the transverse ligament.

The Atlas Vertebra

The atlas, the uppermost vertebra of the spinal column. Labels: 1, anterior tubercle; 2, articular face…

Right lateral view of the cervical portion of the vertebral column of a horse. 1 to 7, the seven segments; 1, the atlas-a, its wing-S, internal foramen of alar gutter-9, posterior foramen of wing; 2, the dentata-11, neural spine; 12, transverse process; 13, centrum; 14, foramen corresponding to intervertebral foramen; 10, atlo-axoid space; the odontoid process is seen below the figures; 15, zygapophyses, or olbique processes; 16, centra, or bodies, in situ- 17, hypapophyses, or inferior processes-b, transverse processes-c, trifid transverse process of sixth vertebra-d, transverse process of seventh.

Horse Vertebral Column

Right lateral view of the cervical portion of the vertebral column of a horse. 1 to 7, the seven segments;…