第二节口腔内消化 (Digestion in oral cavity Outline Salivary secretion and its regulation Components of saliva Actions of saliva Regulation of salivary secretion Chewing swallowing Chewing Swallowing 上一页下一页放映结束08:11:56 消化 9 第二节 口腔内消化 （Digestion in oral cavity） 上一页 下一页 放映结束 Salivary secretion and its regulation －Components of saliva －Actions of saliva －Regulation of salivary secretion Outline Chewing & swallowing －Chewing －Swallowing