Mouth. It all begins with mastication, the mechanical chewing and grinding of food by the teeth. Mastication increases the surface area of the food so the impact of the various digestive processes throughout the bowel transit are magnified.
Mdomo. Yote huanza na kutafuna, kutafuna kwa mitambo na kusaga chakula kwa meno. Kutoboa huongeza eneo la chakula hivyo athari ya michakato mbalimbali ya usagaji chakula katika njia ya haja kubwa hukuzwa.