Question
Describe the human ribcage in detail. [5 MARKS]
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- Rib cage occupies the chest region. It is cone-shaped structure made up of 12 pairs of ribs.
- Ribs are attached to vertebrae at the back which curve around to form a cage.
- 10 pairs of ribs are attached to the breast bone at the front.
- 2 pairs of lower ribs are free at front. These are called as free-floating ribs.
- Rib cage is set up in such a way that it can contract and expand during the process of breathing.
- Rib cage protects the underlying lungs, heart and some part of liver etc.
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