Thorax- Osteology Flashcards
Jugular notch at the level of …
T2
Sternal angle at the level of …
T4/5
Xiphoid process at the level of …
T10
Typical ribs
3-9
Atypical ribs
1, 2, 10-12
Why is rib 1 atypical
Shorter and wider
Only one facet on its head for articulation with its corresponding vertebrae
Has two costal grooves
Why is rib 2 atypical
Roughened area on its upper surface for attachment of serratus anterior
Why is rib 10 atypical
Has only one facet
Why are ribs 11 and 12 atypical
No neck and only one facet
Features of typical ribs
Head, neck and body
2 articular facets
Tubercle
Costal groove
Costotransverse joint
Between the tubercle of the rib and the transverse costal facet of the corresponding vertebrae
Costovertebral joint
Between the head of the rib, the superior costal facet of the corresponding vertebrae and the inferior costal facet of the vertebrae above
Costal cartilage of which ribs attached directly to the sternum
1-7
Which ribs attach to the costal cartilage superior to them
8-10
Which ribs are ‘floating’
11 and 12
