Question

4. 12 pairs of curved bones in the
chest region.​

Answer 1

Answer:

ribcage

Explanation:

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Answer 2

Answer:

here is your answer

Explanation:

12 pairs of bones are ribs that are present in our chest region, the last ( 12th ) rib joins to the backbone and the sternum or the breastbone and form a box like structure called rib cage, this cage protects delicate organs like Heart, lungs and liver

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