《动物的营养简体版》PPT课件.ppt

Whydosomestarvedchildrenhaveabigabdomen?为什么长期挨饿,孩子的腹部会隆起？,Theprocessofbreakingdownfoodintosmallandsolublemoleculesiscalleddigestion.食物在消化道内分解成可以被吸收利用的小分子物质的过程。,一、营养物质的消化(Digestion),Footnote:water,vitaminsandmineralscouldbeabsorbeddirectlywithoutdigestion,食物的消化thedigestionoffood,大分子物质小分子物质,大分子物质小分子物质,食物的消化,淀粉,脂肪,蛋白质,oralcavity口腔,Pharynx咽,Liver肝脏,Pancreas胰脏,Stomach胃,LargeIntestine大肠,Smallintestine小肠,Anus肛门,消化道alimentarycanal：,消化腺digestivegland：,Salivarygland唾液腺,Gastricglands胃腺,smallIntestineglands肠腺,Digestivesystem消化系统,Gullet食道,胆囊,Digestionintheoralcavity口腔内的消化,唾液腺,Footnote:物理性消化（PhysicalDigestion）化学性消化（ChemicalDigestion),back,Digestioninthestomach胃中的消化,胃腺,AdditionalInformation什么是胃溃疡(pepticulcer)?,back,Digestioninthesmallintestine小肠内的消化,肝脏,胆囊,AdditionalInformation什么是胆结石(Gallstone)?,back,Footnote:物理性消化（PhysicalDigestion）化学性消化（ChemicalDigestion),胰腺,胰液,胰淀粉酶,淀粉,麦芽糖,脂肪微粒,脂肪酸+甘油,胰脂肪酶,胰蛋白酶,蛋白质,多肽,Digestioninthesmallintestine小肠内的消化,back,肠腺,小肠液,肠淀粉酶,肠麦芽糖酶,肠肽酶,肠脂肪酶,淀粉,麦芽糖,葡萄糖,多肽,氨基酸,脂肪微粒,脂肪酸+甘油,Digestioninthesmallintestine小肠内的消化,back,Conclusion,Footnote:葡萄糖、氨基酸、脂肪酸和甘油是可以被吸收利用的小分子物质。,Absorptionisthemovementofdigested,solubleandsimplemoleculesfromthegutthroughthewallintothebody。食物的各种消化产物以及水、无机盐和维生素等，通过胃、肠的黏膜上皮细胞而进入血液和淋巴的过程。,二、营养物质的吸收(absorptionofnutrients),一、胃的吸收Absorptionofstomach,水(water)无机盐(minerals)酒精(alcohol),二、小肠的吸收Absorptionofsmallintestine,皱襞,小肠内壁黏膜,小肠(smallintestine)结构模式图,小肠的内表面积,吸收面积是怎样增加的?,小肠上皮细胞是怎样吸收营养物质的？,静脉,动脉,淋巴管,小肠绒毛(Villus)结构模式图,三、大肠的吸收Absorptionoflargeintestine,大肠,水(water)无机盐(minerals)部分维生素(vitamins)将食物残渣形成粪便,AdditionalInformation腹泻及便秘(diarrhoeaandconstipation)?,Conclusion