Lec. 5 Axial Skeleton Flashcards
1
Q
What are the 5 regions of the vertebral column
A
Cervical (C1-C7) Thoracic (T1-T12) Lumbar (L1-L5) Sacrum ( fused S1-S5) Coccyx (Co1-Co4 2-4 fused)
2
Q
Features of typical vertebra
A
Except C1
- vertebral arch & processes
- body
- vertebral foramen (forms vertebral canal)
- pedicle
- lamina
- spinous process
- transverse process
- superior articular process
- intervertebral foramen
- inferior articular process
3
Q
Features of sternum
A
4
Q
Features of ribs
A
5
Q
Unique features of cervical vertebrae
A
- bifid spinous process
- transverse foramen
6
Q
Unique features of Atlas (C1)
A
- no body
- no spinous process
- anterior and posterior arches
- lateral masses (2)
- transverse foramen in transverse process
7
Q
Unique features of Axis (C2)
A
- odontoid process (dens)
(C1’s body fused to c2 Esther than c1) - large spinous process
8
Q
What is the thoracic cage composed of
A
- sternum
- ribs &their costal cartilages
- vertebral bodies of the thoracic vertebrae
9
Q
Features of the sternum
A
Clavicular notch(2) Suprasternal notch Manubrium Sternal angle Body Xiphoid process
10
Q
How many pairs of ribs are there
A
12
11
Q
What are true ribs
A
Ribs 1-7 bc the directly attach to sternum
12
Q
What are false ribs
A
Ribs 8-12 bc they attach indirectly to sternum
13
Q
Rib characteristics
A
- head
- neck
- tubercle (articulates w/ transverse process)
- costal angle
- body
