Comment 2
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Note for the Master Mind
When swallowing, the lower jaw generally supports itself briefly against the
upper jaw. Swallowing_material (food, liquid/saliva) is collected in the middle
of the back of the tongue in a cup-shaped
bowl. This
bowl is
then
(1)
pressed with its contents against the roof of the
mouth, sealing it there
,then
(2)
the
bowl opens toward the pharynx, (3) the larynx
is raised and
(4) its lid closes,
(5) the
muscles push the swallowed material
backward
into the esophagus, from where (6) it is
forced downward through the esopha-gus in a wave movement - or upwards, if the
person makes a handstand, which would probably not be the norm.
Conclusion: In phase 5, the lower jaw can CURRENTLY support itself
against the upper jaw not only via the tongue muscle but also via the rows of
teeth. Glenerally the tooth
surfaces never touch each other directly “in normal opera-tion”. When the teeth
“wear out” it is the result of malfunc-tion/habit. back to theText with Link above |