Samtidigt som vi andas måste vi nämligen spänna ett antal småmuskler i svalget så att slemhinnorna inte ska dras in och förminska luftkanalen . Det kan man visa med ett enkelt experiment .
simultaneously as we breathe must we namely flex a number small.muscles in throat.the so that mucosa.the not will pulled in and diminish air.duct.the that can one show with a simple experiment
At the same time as we breathe, we have to flex a number of small muscles in the throat, in order for the mucosa not to get pulled in and diminish the air duct. That can be shown with a simple experiment.