Mouth (How it Functions)

The video explains the initial stages of digestion, starting in the mouth. It covers mastication, where food is chewed into a bolus, and the role of saliva in moistening and beginning the digestion process. The video also discusses the types of teeth and their functions, the tongue's role in taste and forming the bolus, and the process of swallowing, which involves both voluntary and involuntary actions. Saliva's enzymatic activity, particularly amylase, is highlighted for its role in breaking down starches.

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