在人体消化系统中有位于消化道外的腺体如肝脏唾液腺等.小肠内含有能对糖类蛋白质起消化作用的消化液是胰液和肠液.消化后的营养成分经过小肠绒毛 Template




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tomski在人体消化系统中有位于消化道外的腺体如肝脏唾液腺等.小肠内含有能对糖类蛋白质起消化作用的消化液是胰液和肠液.消化后的营养成分经过小肠绒毛 coloring