A-Glance-at-Human-Body-(easy-version)--人体结构一瞥(儿童版)课件

A Glance at Human Body(easy version)人体结构一瞥人体结构一瞥(儿童版儿童版)服从真理，就能征服一切事物Major systems of bodySkeletal SystemSkeletalsystemisthesystemofbones,associatedcartilagesandjointsBone isatoughandrigidformofconnectivetissue.ItistheweightbearingorganofhumanbodyanditisresponsibleforalmostallstrengthofhumanskeletonCartilage isalsoaformofconnectivetissuebutisnotastoughandrigidasbone.Joints makethehardandrigidskeletonallowdifferenttypesofmovementsatdifferentlocations.Skeletal SystemThemainroleoftheskeletalsystemistoprovidesupportforthebody,toprotectdelicateinternalorgansandtoprovideattachmentsitesfortheorgans.Muscular SystemMuscular SystemMusclesarebodytissuesthatprovidetheforceforallbodymovements.Theyaremadeofspecialtypesofcells.Skeletal Muscles:theyarealmostalwaysfoundattachedtotheskeletonandproducemovementsindifferentpartsoftheskeleton.TheyareunderthecontrolofhumanwillSmooth Muscles:formthesoftbodyorganslikestomach,intestine,bloodvesselsetc.Theyarenotunderthewillofhumanbeingsandareresponsibleforunconsciousbodyactivitieslikedigestionoffood.Cardiac Muscles:They areonlyfoundinhumanheart,extremelystrongandpowerfulmuscles.Theyarenotunderthecontrolofhumanwillandareinvoluntary.Three types of musclesSkeletal MusclesSmooth Muscles:Cardiac MusclesMuscular SystemThemainroleofthemuscularsystemistoprovidemovement.Musclesworkinpairstomovelimbsandprovidetheorganismwithmobility.Musclesalsocontrolthemovementofmaterialsthroughsomeorgans,suchasthestomachandintestine,andtheheartandcirculatorysystem.Nervous SystemNeuronistheunitofnervoussystemCENTRAL NERVOUS SYSTEM(CNS):includesbrainandspinalcord.PERIPHERAL NERVOUS SYSTEM(PNS):includesallthepartsofnervoussystemexceptbrainandspinalcord.Itisfurtherdividedintotwocomponents;SomaticnervoussystemandAutonomicnervoussystem.Nervous systemNervous systemThemainroleofthenervoussystemistorelayelectricalsignalsthroughthebody.Thenervoussystemdirectsbehaviorandmovementand,alongwiththeendocrinesystem,controlsphysiologicalprocessessuchasdigestion,circulation,etc.Respiratory SystemKEY STRUCTURES:lungsbronchibronchiolesalveoliRespiratory SystemRespiratory SystemRespiratory SystemThemainroleoftherespiratorysystemistoprovidegasexchangebetweenthebloodandtheenvironment.Primarily,oxygenisabsorbedfromtheatmosphereintothebodyandcarbondioxideisexpelledfromthebody.Cardiovascular SystemMajor Organs:HeartHeartismadeupofthreelayers;Pericardium,MyocardiumandEndocardium.bloodvesselsthreetypesofbloodvesselsArteries,CapillariesandVeins.Bloodtwomajorportions:BloodcellsandPlasmaHeartCirculation SystemCells in the bloodCardiovascular SystemThemainroleofthecirculatorysystemistotransportnutrients,gases(suchasoxygenandCO2),hormonesandwastesthroughthebody.Digestive SystemMajor Organs:MouthEsophagusStomachsmallandlargeintestines.Digestive SystemDigestive SystemThemainroleofthedigestivesystemistobreakdownandabsorbnutrientsthatarenecessaryforgrowthandmaintenance.Endocrine SystemEndocrine SystemTypes of Endocrine Glands1)TYPICAL ENDOCRINE GLANDS:Theseglandshaveprimaryfunctionofproducinghormonesforhumanbody.Theyinclude;PITUITARY GLANDTHYROID GLANDPARATHYROID GLANDSADRENAL GLANDS2)ORGANS HAVING SECONDARY ENDOCRINE FUNCTION:Theseorgansprimarilybelongtosomeothersystemofthebodybuthaveasecondaryfunctionofproducinghormones.Theyinclude;PANCREAS(HormonesofPancreas)OVARIES(Infemales)(HormonesofOvaries)TESTES(Inmales)(HormonesofTestes)KIDNEYS(HormonesofKidneys)LIVER(HormonesofLiver)Endocrine SystemThemainroleoftheendocrinesystemistorelaychemicalmessagesthroughthebody.Inconjunctionwiththenervoussystem,thesechemicalmessageshelpcontrolphysiologicalprocessessuchasnutrientabsorption,growth,etc.Lymphatic SystemKEY STRUCTURES:lymphnodesLymphVesselswhitebloodcells,T-andB-cells.Lymphatic SystemLymphatic SystemThemainroleoftheimmunesystemistodestroyandremoveinvadingmicrobesandvirusesfromthebody.Thelymphaticsystemalsoremovesfatandexcessfluidsfromtheblood.Urinary SystemMajor Organs:KidneysUretersbladderurethraUrinary SystemUrinary SystemThemainroleoftheurinarysystemistofilteroutcellularwastes,toxinsandexcesswaterornutrientsfromthecirculatorysystem.Skin SystemTheskinsystemistheorgansystemthatprotectshumanbodyfromdamage.Itconsistsofskinanditsappendages,whichincludehair,nails,andsweatglandsetc.Itformsabout16percentoftheweightofhumanbody.Skin SystemSkin SystemItservesasawaterproofcushionthatprotectsdeepertissues.ItgetsridofwastesandregulatesbodytemperatureIthavemanytypesofsensoryreceptorstodetectpain,sensation,pressure,andtemperature.ItisalsoasourceofvitaminDsynthesiswhichisrequiredforhealthyhumanbody.56、书不仅是生活，而且是现在、过去和未来文化生活的源泉。库法耶夫57、生命不可能有两次，但许多人连一次也不善于度过。吕凯特58、问渠哪得清如许，为有源头活水来。朱熹59、我的努力求学没有得到别的好处，只不过是愈来愈发觉自己的无知。笛卡儿60、生活的道路一旦选定，就要勇敢地走到底，决不回头。左拉