Anatomy of the vertebral collumn Flashcards Preview

Yr 2 Movement - term 2 and 3 > Anatomy of the vertebral collumn > Flashcards

Flashcards in Anatomy of the vertebral collumn Deck (72)
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1

How many vertebrae are there in the back?

33
(30 if you count coccyx as one)

2

How many regions are there in the spine, and what are they called?

5
-cervical
-thoracic
-lumbar
-sacral
-coccygeal

3

How many vertebrae are there in each region of the spine?

CERVICAL - 7
THORACIC - 12
LUMBAR - 5
SACRAL - 5
COCCYGEAL - ~4

4

Which vertebra is most prominent?

C7

5

How much of the vertebral column is made up of inter-vertebral discs?

1/4 of the length

6

What features are there on the vertebral arches? (2)

-pedicles
-lamina

7

How many articular facets are there on each vertebra?

Four
-2x superior
-2x inferior

8

How many transverse processes are there on each vertebra?

2

9

How many spinous processes are there on each vertebra?

1

10

Where are the vertebral notches located?

Superior and inferior to the pedicles.

11

What do adjacent vertebral notches form?

Intervertebral foramen.

12

What passes through intervertebral foramen?

Spinal nerves.

13

How do typical cervical vertebrae vary from normal? (3)

-small body
-bifid transverse process
-foramina in transverse processes

14

Why do cervical vertebrae have bifid transverse processes?

Muscle attachments
>>wide range of movement

15

What passes through the foramina in cervical vertebrae?

Vertebral artery and vein
-except C7

16

Why is dislocation of cervical vertebrae relatively likely?

Flat articular surfaces.

17

What are the different severities of a cervical vertebra dislocation?

-Flexion sprain
-Sublaxation
-Complete dislocation

18

Which 2 cervical vertebrae are atypical?

-Atlas (C1)
-Axis (C2)

19

Which cervical vertebra has no spinous process or body?

Atlas (C1)

20

What does the atlas consist of posteriorly and anteriorly?

Posterior & anterior arches

21

What do the posterior and anterior arches of the atlas (C1) contain?

A tubercle and a lateral mass.

22

Where does the transverse ligament connect to the atlas?

Tubercle on the medial surface of the lateral mass.

23

What is the function of the transverse ligament (atlas)?

Holds the dens of the axis in place.

24

What are the 2 large flat surfaces on the superior surface of the axis called?

Superior articular facets.
-atlas rotates upon them

25

What is another name for the dens?

Odontoid process.

26

What holds the dens in place, and what does this prevent?

The transverse ligament of atlas.
-prevents horizontal displacement

27

Why is the dens prone to fracture?

Less dense bone.

28

What causes dens fractures?

-Hyperextension
-Hyperflexion

29

What shape is a thoracic vertebral body?

Heart-shaped

30

What does the thoracic vertebral body contain superiorly and inferiorly?

Costal demi-facets.
-for articulation with head of rib