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Questions and Answers
What is the characteristic of the superior margin of the shaft?
What is the characteristic of the superior margin of the shaft?
- Sharp and jagged
- Curved and thick
- Smooth and rounded (correct)
- Rough and uneven
Where does the shaft bend forward just laterally to the tubercle?
Where does the shaft bend forward just laterally to the tubercle?
- At the costal groove
- At the angle (correct)
- At the internal surface
- At the superior margin
What is the texture of the outer surface of the shaft?
What is the texture of the outer surface of the shaft?
- Curved
- Smooth
- Rough (correct)
- Jagged
How is the inferior margin of the internal surface marked?
How is the inferior margin of the internal surface marked?
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What term is used to describe the angle where the shaft bends forward laterally to the tubercle?
What term is used to describe the angle where the shaft bends forward laterally to the tubercle?
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Study Notes
Articulation with Ribs
- The superior costal facet articulates with the inferior costal facet on the atypical (non-typical) thoracic vertebrae.
The Rib Structure
- The rib has a thin and fat shaft with internal and external surfaces.
- The superior margin is smooth and rounded, while the inferior margin is sharp.
- The shaft bends forward, just lateral to the tubercle, at an angle.
- The outer surface is rough, while the inner surface is smooth.
- The inferior margin of the internal surface has a distinct costal groove.
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