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/sci/ - Science & Math

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9367640 No.9367640 [Reply] [Original]

do ribcages expand? was standing at the mirror and inhaled and saw my ribs move away from each other. is this normal? i didnt feel pain from it.

>> No.9367677

Yeah ribcages are somewhat flexible compared to the other bones in the body

>> No.9367680

Yes.
https://www.nhlbi.nih.gov/health-topics/how-lungs-work

Your diaphragm moves down and your chest enlarges and that pulls a partial vacuum in your chest. That's what expands your lungs. They have no muscles of their own.

That's why people with a hole in their chest can't breathe even if the lungs are OK. Can't maintain that vacuum. Chest surgery used to be almost impossible before mechanical breathing aids were invented.

>> No.9367902

Also why CPR works

>> No.9368349

>>9367680
feels good to know if i ever need to kill someone all i need to do is puncture their upper abdomen

>> No.9368501
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9368501

>>9368349
>tfw you lean back in a chair with a low back and your ribs and sternum pop

>> No.9368514

thanks. good to know