Question

Why is the rib cage not a solid sheet like the skull?

Answer 1

because in rib cage there is lung which expand and contract during respiration and brain could not expand very much and brain is most important part which require more protection

Answer 2

Slipping rib syndrome is a condition where the ribs slip away from their usual position. It occurs because the ligaments that help tohold the ribs in the correct place are pulled out of position, causing the ribs to shift.