Atypical cervical vertebrae
Dr Kieran Kusel and Dr Dinesh Palipana et al.
Of the cervical vertebrae, the atlas (C1), axis (C2) and vertebra prominens (C7) are considered atypical cervical vertebrae.
The atlas (C1) lacks a body or spinous process. It has anterior and posterior arches with lateral masses. Its superior articular surfaces articulate with the occiput at the atlanto-occipital joint. Its inferior articular surfaces articulate with the axis at the atlanto-axial joint.
The axis (C2) is unique with an odontoid process (the dens) projecting from its superior surface.
The vertebra prominens (C7) has the longest spinous process of all cervical vertebrae. It is also non-bifid. These features give rise to its name.
For a basic anatomic description of the structure of a generic vertebra, see vertebrae.
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Anatomy: Spine
-
osteology
- vertebrae
- spinal canal
- cervical spine
- thoracic spine
- lumbar spine
- sacrum
- coccyx
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anatomical variants
- vertebral body
- neural arch
- transitional vertebrae
- ossicles
- ossification centers
- intervertebral disc
- articulations
- ligaments
- musculature of the vertebral column
- muscles of the neck
- muscles of the back
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suboccipital muscle group
- rectus capitis posterior major muscle
- rectus capitis posterior minor muscle
- obliquus capitis superior muscle
- obliquus capitis inferior muscle
- splenius capitis muscle
- splenius cervicis muscle
- erector spinae group
- transversospinalis group
- quadratus lumborum
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suboccipital muscle group
- spinal meninges and spaces
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spinal cord
- gross anatomy
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white matter tracts (white matter)
- corticospinal tract
- anterolateral columns
- lateral columns
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dorsal columns
- fasiculus gracilis (column of Goll)
- fasiculus cuneatus (column of Burdach)
- grey matter
- nerve root
- central canal
- functional anatomy
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- sympathetic chain
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