sad and frowning
This form of digestion starts in the mouth with the salivary gland witch break down food
Test tube mouth up: nothingTest tube mouth down: the denser gas can escape
It implies that the corners of your mouth are turned down, which is what can happen if you are sad.
5% of the starches are broken down in the mouth before the food is swallowed.
soap in potty mouth
The mouth is where food is chewed.
The mouth breaks down and absorbs sugars in the food we eat.
Amylase in the saliva begins the breakdown of starch in your mouth.
if mouth is open the water should go down the throat. but if mouth is closed, there is no gap to displace the air
Saliva
mouth
it has a mouth down the bottom