DennyRombardt
DennyRombardt t1_ixnuj34 wrote
Reply to comment by SteptimusHeap in What physically decides whether air goes through the nose or through the mouth? by SteptimusHeap
That's your epiglottis, which you discounted. Other than that, there is nothing.
DennyRombardt t1_ixnqvq7 wrote
Reply to What physically decides whether air goes through the nose or through the mouth? by SteptimusHeap
If you close your mouth, you just breathe through your nose. If you open your mouth, you breathe through your mouth and nose. If you have a perforated ear drum, you can breathe through your ears. When you breathe in, air will enter through any orifice available unless you physically block it yourself. Your body has no way to do it. Apart from obviously closing your mouth.
DennyRombardt t1_ixo1fsb wrote
Reply to comment by SteptimusHeap in What physically decides whether air goes through the nose or through the mouth? by SteptimusHeap
It doesn't. It blocks air coming in from your mouth. You can have your mouth open and only breath through your nose. Your epiglottis and tonsils close up at the back of your throat to block it. There is no internal way for you to block your nose.