is the mucous
Mucus cells are cells from the lining of the mouh. squamous cells
My guess would be oxygen and carbon dioxide.
The lips, the tongue, the teeth, the gums, the lining inside the lips and cheeks, the floor of the mouth (under the tongue), the roof of the mouth and the small area behind the wisdom teeth.
Areas of the body subject to abrasion. It is the thickest layer of the skin, and composes most of the lining of the mouth, esophagus, and vagina.
They breathe through their skin, their mouth lining, and their throat lining, provided they are sufficiently moist.
is the mucous
Epithelial tissue
the salamander.
lining the mouth
Yes, the lining of the mouth is damaged and that produces pain. The mouth and lips have a very large number of nerve endings.
I think it is chewing tobacco
Alcohol is first absorbed in the mouth and then the lining of your stomach.
Mucus cells are cells from the lining of the mouh. squamous cells
The word sought may be ulcer (a hole or tear, especially in the stomach or lining of the mouth).
My guess would be oxygen and carbon dioxide.
herpes labialis