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You may discuss about the differences between typical and atypical vertebrae with respect to its size and morphology.
For example, morphologically speaking, the axis and atlas vertebrae have no vertebral body, which the rest of vertebrae has it. Moreover, the axis vertebra has a distinctive part, called odontoid peg, that allows the rotation movement of the head, around the odontoid peg of axis vertebra.
You may also notice that there exists differences between the sizes of the the three types of vertebrae, cervical, thoracic and lumbar. For example, the thoracic and lumbar vertebrae have much more expanded vertebral bodies and much more extended spinous process.
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The 'atypical' vertebrae are the two most superior positioned i.e. the top two (C1 & C2); C1 is also called the 'Atlas' and C2 the 'Axis'. The 'typical' vertebrae are the five most inferior positioned i.e. the bottom 5 (C3-C7).
want to know the difference between typical and atypical vertebrae? features?
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