HumanBiology
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sa/3.0/),gasgamendedgandgupdatedgbygCreativegCommonsgfromgti
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anuaryg16,g2013
,www.ck12.org Chapter1.HumanBiology
CHAPTER
1 HumanBiology
C HAPTER O UTLINE
1.1 OrganizationoftheHumanBody
1.2 Homeostasis
1.3 Skin
1.4 NailsandHair
1.5 KeepingSkinHealthy
1.6 HumanSkeletalSystem
1.7 SkeletalSystemJoints
1.8 KeepingBonesandJointsHealthy
1.9 Smooth,Skeletal,andCardiacMuscles
1.10 Muscles,Bones,andMovement
1.11 MusclesandExercise
1.12 FoodandNutrients
1.13 TypesofNutrients
1.14 VitaminsandMinerals
1.15 ChoosingHealthyFoods
1.16 HumanDigestiveSystem
1.17 EnzymesintheDigestiveSystem
1.18 DigestiveSystemOrgans
1.19 BacteriaintheDigestiveSystem
1.20 HealthoftheDigestiveSystem
1.21 CardiovascularSystem
1.22 CirculationandtheLymphaticSystem
1.23 Heart
1.24 BloodVessels
1.25 ComponentsofBlood
1.26 BloodTypes
1.27 BloodDiseases
1.28 BloodPressure
1.29 CardiovascularDiseases
1.30 CardiovascularSystemHealth
1.31 Respiration
1.32 RespiratorySystemOrgans
1.33 ProcessesofBreathing
1
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1.34 RespiratorySystemDiseases
1.35 RespiratorySystemHealth
1.36 Excretion
1.37 UrinarySystem
1.38 Kidneys
1.39 ExcretorySystemProblems
1.40 NervousSystem
1.41 NerveCellsandNerveImpulses
1.42 CentralNervousSystem
1.43 PeripheralNervousSystem
1.44 HumanVision
1.45 HowtheEyeWorks
1.46 VisionCorrection
1.47 HearingandBalance
1.48 Touch
1.49 TasteandSmell
1.50 DiseasesoftheNervousSystem
1.51 InjuriesoftheNervousSystem
1.52 KeepingtheNervousSystemHealthy
1.53 Pathogens
1.54 HIVandAIDS
1.55 PreventingInfectiousDiseases
1.56 Cancer
1.57 Diabetes
1.58 AutoimmuneDiseases
1.59 PreventingNoninfectiousDiseases
1.60 BarrierstoPathogens
1.61 InflammatoryResponse
1.62 LymphaticSystem
1.63 BandTCellResponse
1.64 Immunity
1.65 MaleReproductiveSystem
1.66 MaleReproductiveStructures
1.67 HumanSperm
1.68 FemaleReproductiveSystem
1.69 FemaleReproductiveStructures
1.70 HumanEggCells
2
SayThankstotheAuthors
Clickhttp://www.ck12.org/saythanks
(Nosigninrequired)
,Togaccessgagcustomizablegversiongofgthisgbook,gasgwellgasgotherg
interactivegcontent,gvisitgwww.ck12.org
CK-12gFoundationgisgagnon-
profitgorganizationgwithgagmissiongtogreducegthegcostgofgtextboo
kgmaterialsgforgthegK-
12gmarketgbothingthegU.S.gandgworldwide.Usinggangopen-
content,gweb-
basedgcollaborativegmodelgtermedgthegFlexBook®,gCK-
12gintendsgtogpioneerthegenerationanddistributionofhigh-
qualityeducationalgcontentgthatgwillgservegbothgasgcoregtextgasgw
ellgasgprovidegangadaptiveenvironmentforlearning,poweredthroug
htheFlexBookgPlatform®.
Copyright©2012CK-12Foundation,www.ck12.org
Thegnamesg“CK-
12”gandg“CK12”gandgassociatedglogosgandgthegtermsg“FlexBook
®”gandg“FlexBookgPlatform®”g(collectivelyg“CK-
12gMarks”)garegtrademarksgandgservicegmarksgofgCK-
12gFoundationgandgaregprotectedgbygfederal,gstate,gandginternatio
nalglaws.
Anygformgofgreproductiongofgthisgbookginganygformatgorgmediu
m,gingwholegorgingsectionsgmustgincludegthegreferralgattributiongl
inkghttp://www.ck12.org/saythanks(placedgingagvisibleglocatio
n)gingadditiongtogthegfollowinggterms.
Exceptasotherwisenoted,allCK-12Content(includingCK-
12CurriculumMaterial)ismadeavailabletoUsersgingaccordancegwi
thgthegCreativegCommonsgAttribution/Non-
gCommercial/ShareAlike3.0Unported(CCBY-NC-
SA)Licenseg(http://creativecommons.org/licenses/by-nc-
sa/3.0/),gasgamendedgandgupdatedgbygCreativegCommonsgfromgti
megtogtimeg(theg“CCgLicense”),gwhichgisgincorporatedghereingby
gthisgreference.
Completetermscanbefoundathttp://www.ck12.org/terms.gPrinted:gJ
anuaryg16,g2013
,www.ck12.org Chapter1.HumanBiology
CHAPTER
1 HumanBiology
C HAPTER O UTLINE
1.1 OrganizationoftheHumanBody
1.2 Homeostasis
1.3 Skin
1.4 NailsandHair
1.5 KeepingSkinHealthy
1.6 HumanSkeletalSystem
1.7 SkeletalSystemJoints
1.8 KeepingBonesandJointsHealthy
1.9 Smooth,Skeletal,andCardiacMuscles
1.10 Muscles,Bones,andMovement
1.11 MusclesandExercise
1.12 FoodandNutrients
1.13 TypesofNutrients
1.14 VitaminsandMinerals
1.15 ChoosingHealthyFoods
1.16 HumanDigestiveSystem
1.17 EnzymesintheDigestiveSystem
1.18 DigestiveSystemOrgans
1.19 BacteriaintheDigestiveSystem
1.20 HealthoftheDigestiveSystem
1.21 CardiovascularSystem
1.22 CirculationandtheLymphaticSystem
1.23 Heart
1.24 BloodVessels
1.25 ComponentsofBlood
1.26 BloodTypes
1.27 BloodDiseases
1.28 BloodPressure
1.29 CardiovascularDiseases
1.30 CardiovascularSystemHealth
1.31 Respiration
1.32 RespiratorySystemOrgans
1.33 ProcessesofBreathing
1
, www.ck12.org
1.34 RespiratorySystemDiseases
1.35 RespiratorySystemHealth
1.36 Excretion
1.37 UrinarySystem
1.38 Kidneys
1.39 ExcretorySystemProblems
1.40 NervousSystem
1.41 NerveCellsandNerveImpulses
1.42 CentralNervousSystem
1.43 PeripheralNervousSystem
1.44 HumanVision
1.45 HowtheEyeWorks
1.46 VisionCorrection
1.47 HearingandBalance
1.48 Touch
1.49 TasteandSmell
1.50 DiseasesoftheNervousSystem
1.51 InjuriesoftheNervousSystem
1.52 KeepingtheNervousSystemHealthy
1.53 Pathogens
1.54 HIVandAIDS
1.55 PreventingInfectiousDiseases
1.56 Cancer
1.57 Diabetes
1.58 AutoimmuneDiseases
1.59 PreventingNoninfectiousDiseases
1.60 BarrierstoPathogens
1.61 InflammatoryResponse
1.62 LymphaticSystem
1.63 BandTCellResponse
1.64 Immunity
1.65 MaleReproductiveSystem
1.66 MaleReproductiveStructures
1.67 HumanSperm
1.68 FemaleReproductiveSystem
1.69 FemaleReproductiveStructures
1.70 HumanEggCells
2
