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Unformatted text preview: 3. Muscularis : the Muscle Layer. 3rd layer from the lumen Most areas: two layers Stomach: 3 layers 1. longitudinal muscles 2. circular muscles 3. oblique muscles (stomach only) Structure of the human digestive system 4. Serosa : Outermost Layer • Secretes serous fluid • Reduces friction between organs C. Pathway of Food 1. Oral Cavity a. Teeth b. Functions of Oral Cavity 1. mechanical: mastication (chewing) 2. chemical: starches are digested here (amylase) **Food forms a bolus: (a wad of food, mucus, and salivary amylase) C. Pathway of Food...
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- Spring '11
- Biology, digestive tract, Secretes serous fluid, C. Pathway, organs C. Pathway