The thoracic cage is built from the sternum and how many pairs of ribs?
A32
B42
C12
D22
Answer & Solution
Correct answer: C. 12
1. Each pair wraps one side.
2. The chest wall is complete at that count.
3. There are 12 pairs.
_Source: OpenStax Anatomy and Physiology 2e, Chapter 7, Axial Skeleton._
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