Endo-
Inside
-algia
Pain
-ectomy
Surgical removal
-scopy
Visual examination with a lighted instrument
Enter(o)
Intestine
Esophag(o)
esophagus
Hepat(o)
Liver
Gastr(o)
Stomach
Dent, odont
Tooth or teeth
Gingiv-
Pertaining to gums
Lingu-
Pertaining to the tongue