How can only one cheek be inflated with air?

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There is no air tight barrier in between my two cheeks, so how am I controlling the air in my mouth and directing it to one specific cheek? The deflated cheek is still floppy, so it’s not like I’m tensing a muscle to stop it inflating.

Also works if I have a mouth full of water, and can also be directed to top and bottom lips.

Thank you.

In: Biology

34 Answers

Anonymous 0 Comments

Sitting here and repeatedly moving air from one side of my mouth to the other tells me that what’s happening is that you’re not allowing any air/water to go out of your mouth, either through your throat or your lips. Additionally, your “empty” cheek might not be as tense/distended as the “full” one, but it’s not exactly floppy–you’re not allowing any air/water to be in that cheek, which puts pressure on the contents of your mouth and drives it to the “full” side.

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