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02 - Axial - Cervical Spine > Bones > Flashcards

Flashcards in Bones Deck (7)
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1

Curve

> Lordosis (anterior convexity)
- mostly at C1-C2
- 40 degrees from Occiput (C0) to C7

2

No. of vertebrae

> 7
- 6 discs
- 8 peripheral nerves

3

Typical vertebrae features

> C3-6
> Small rectangular body (carries weight of head + neck)
- body has lipped edges - joints of von luschka
> Large foramen - carries majority of spinal cord
> Articular pillar supporting:
- Sup + Inf Articular facets - flat + wide
- face horizontally (slope as we descend)
> Anteriorly positioned transverse processes (with anterior and posterior tubercles)
- foramen transversarium (carries vertebral artery)
> Bifid spinous processes

4

Function

> Mobility
> Support
> Protection of spinal cord + neural structures

5

C1 features

> ATLAS
> Ring shaped
- no body (replaced by anterior arch)
- no spinous process (replaced by posterior arch)
> Anterior arch (articular facet on posterior aspect for dens)
> Posterior arch
> Biconcave superior articular facets (receive convex occiput facets)
> Inferior concave facets (articulate with axis)
> 2 Lateral masses (with transverse foramen)
- instead of transverse processes

6

C2 features

> AXIS
> Odontoid peg
- projects superiorly
- anterior surface has facet for posterior aspect of anterior arch of C1
- sits on body of C2
> 2 Lateral articular facets
> Transverse processes + foramina
> 2 narrow lamina
> Bifid spinous process

7

C7 features

> VERTEBRA PROMINENS
- most prominent spinous process
- C6 will disappear on extension but C7 will not