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The Skeletal SystemThe Skeletal System
Master WelchMaster Welch
BonesBones
BonesBones
•Function Function
•StructureStructure
•TypesTypes
•JointsJoints
•Movement and body Movement and body functionsfunctions
BonesBones
•206 bones206 bones•Protects organsProtects organs•Provides structureProvides structure•Movement and body Movement and body
functionsfunctions
Bone StructureBone Structure
•LivingLiving•OsteoblastsOsteoblasts•Compact boneCompact bone•Spongy boneSpongy bone•MarrowMarrow
OsteoblastsOsteoblasts
Compact BoneCompact Bone
MarrowMarrow
CartilageCartilage
Bone GrowthBone Growth
•CartilageCartilage•Cartilage Hard Cartilage Hard
bonebone
Bone GrowthBone Growth
•Growth plateGrowth plate
BonesBones
•SkullSkull
•Vertebrate (backbone)Vertebrate (backbone)
•Rib cageRib cage
•Large bonesLarge bones
SkullSkull
•Fused jointsFused joints
•Acts like connected Acts like connected bonebone
•Separate at birthSeparate at birth
SkullSkull
SkullSkull
•Protects brainProtects brain
•Eyes, mouth, nose, Eyes, mouth, nose, and earsand ears
SkullSkull
VertebraeVertebrae
•Protects spinal chordProtects spinal chord
•Allow twisting and Allow twisting and bendingbending
VertebraeVertebrae
Rib CageRib Cage
•Protects vital organsProtects vital organs
•Aids in breathingAids in breathing
Rib CageRib Cage
Rib CageRib Cage
Rib CageRib Cage
Large BonesLarge Bones
•Produces blood cellsProduces blood cells
•Stores fatsStores fats
•Provides support and Provides support and allows movementallows movement
Large BonesLarge Bones
1 5
4
3
2
JointsJoints
•FusedFused•SlidingSliding•GlidingGliding•Ball and SocketBall and Socket•HingeHinge
VertebraeVertebrae
•Sliding jointsSliding joints
•Allow twisting and Allow twisting and bendingbending
Gliding jointsGliding joints
•Hand and wrist – feet Hand and wrist – feet and anklesand ankles
•Gives greater Gives greater flexibilityflexibility
Gliding jointsGliding joints
Ball and SocketBall and Socket
•Shoulder and HipShoulder and Hip
•Great circular mobilityGreat circular mobility
Ball and Ball and SocketSocket
HingeHinge
•Elbow and kneeElbow and knee
•Flex and extendFlex and extend
•Gives stabilityGives stability
HingeHinge
SkSkeletoneleton
• Welcome to FOSS' Human BodyWelcome to FOSS' Human Body
ClosingClosing
•Function Function •StructureStructure•TypesTypes•JointsJoints•Movement and Movement and
body functionsbody functions
BonesBones
•Function Function
•StructureStructure
•TypesTypes
•JointsJoints
•Movement and body Movement and body functionsfunctions
BonesBones
•SkullSkull
•Vertebrate (backbone)Vertebrate (backbone)
•Rib cageRib cage
•Large bonesLarge bones