Questions and Answers
What is the name of the first cervical vertebra?
Atlas
What is the name of the second cervical vertebra?
Axis
Identify the articulation site that allows us to nod our head 'yes'.
Occipital bone - atlas
Identify the articulation site that allows us to rotate our head, e.g. shaking the head 'no'.
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Identify the region of the skull that articulates with the atlas.
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Study Notes
Atlas and Axis Overview
- The first cervical vertebra is called the Atlas. It is a specialized ring of bone designed to articulate with the skull.
- The second cervical vertebra is known as the Axis (C2). It features the odontoid process, which allows for rotational movement with C1 (Atlas).
Articulation for Head Movements
- The atlanto-occipital joint enables nodding of the head in a "yes" motion. This joint forms between the occipital condyles and the superior articular processes of the atlas.
- A pivot joint between the Atlas and Axis facilitates head rotation. The dens on the axis serves as the pivot point, allowing the atlas to rotate around it.
Articulation Sites
- The occipital condyles are located on either side of the foramen magnum and sit atop the atlas, forming the atlanto-occipital joint critical for head flexion and extension.
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Description
Test your knowledge about the first two cervical vertebrae, Atlas and Axis. This quiz covers their structures, functions, and the articulation enabling head movements. Dive into their significance in spinal anatomy and understand the mechanics behind nodding and rotation.
