Can you show a picture or something please so I can see what you are talking about?
Because it is flexible. Think about it; the ribs protect both the lungs and the heart. If the ribs were solid bone all the way around then unless you constantly break your ribs you wouldn't be able to expand the cheat to breath. Additionally your lungs would constrict the heart to a degree that it would function properly.
Sexual and reproductive health education is really important in school so that way kids can learn how to avoid getting STD’s and all that. Often when schools poorly teach sexual and reproductive health education, students from that school end up having a poor knowledge on sex and reproduction and they’re more likely to end up having unplanned pregnancies and getting STD’s that could be very dangerous to health. They’re also more likely to be unaware of why they may be experiencing certain health issues from reproductive and sexual-related things.
Right artrium this sould help