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Ribs123
Ribs structure
Question | Answer |
---|---|
How many ribs are there? | 12 |
Which ribs are "typical" ribs? | 3-9 |
What are the main features of a typical rib? | Head, neck, tubricles and a shaft |
Head of a typical rib articulates with what? | 2 vertibrae, superior and inferior demifacets. The rib inferior articular facet of the rib will articulate with the same number demifacet of the vertibrae |
Tubricle of the typical rib is located where and articulates with? | Posterioinferior part of the neck of the rib, articulates with the transverse articular process of the same # rib |
Where is the interarticular crest of a rib? | On the head, between facets |
Where is the costal groove? | Anterior inferior surface of the shaft. Costal vein, artery and nerve run through here |
Unique features of the 1st rib? | Flat, short, articulates withT1 |
2nd rib special features? | Almost typical, lacks tubricle |
10th rib unique? | Single facet, only articulates with T10 |
Floating ribs are? | 11 and 12. Dont attach to sternum, they are short and lack a neck and tubricles |