The Skeleton System Introduction The Axial Skeleton The Appendicular Skeleton.

The Skeleton SystemThe Skeleton System

IntroductionIntroduction The Axial SkeletonThe Axial Skeleton The Appendicular SkeletonThe Appendicular Skeleton

The Axial SkeletonThe Axial Skeleton

The SkullThe Skull CraniumCranium FaceFace

The Vertebral ColumnThe Vertebral Column Cervical VertebraeCervical Vertebrae Thoracic VertebraeThoracic Vertebrae Lumbar VertebraeLumbar Vertebrae SacrumSacrum CoccyxCoccyx

The Thoracic CageThe Thoracic Cage SternumSternum RibsRibs

The Axial SkeletonThe Axial Skeleton

Learning ObjectivesLearning Objectives

• TheThe SkullSkull:: Identify the bones of the craniumIdentify the bones of the cranium Identify the facial bonesIdentify the facial bones

• TheThe VertebralVertebral ColumnColumn:: Identify the bones of the vertebral Identify the bones of the vertebral

columncolumn

• TheThe ThoracicThoracic CageCage:: Identify the bones of the thoracic Identify the bones of the thoracic

cagecage

The SkullThe Skull

• Cranial BonesCranial Bones

• Facial BonesFacial Bones

The Skull: Cranial & Facial The Skull: Cranial & Facial DivisionsDivisions

Cranial BonesCranial Bones

• Occipital bone*Occipital bone*• Frontal bone*Frontal bone*• Parietal bonesParietal bones• Temporal bones*Temporal bones*• Sphenoid bone*Sphenoid bone*• Ethmoid bone*Ethmoid bone*

SkullSkull

• To View 3-D Video:To View 3-D Video:– Move mouse cursor over slide title-linkMove mouse cursor over slide title-link– When hand appears, click onceWhen hand appears, click once

• MOV Video is interactiveMOV Video is interactive

Cranial & Facial BonesCranial & Facial Bones

SkullSkull

• MOV Video runs 5 secMOV Video runs 5 sec

Skull BonesSkull Bones

Cranial SuturesCranial Sutures

• Coronal sutureCoronal suture btw/ frontal bone & parietalsbtw/ frontal bone & parietals

• Sagittal sutureSagittal suture btw/ parietal bonesbtw/ parietal bones

• Lambdoidal sutureLambdoidal suture btw/ parietals & occipitalbtw/ parietals & occipital

• Squamosal sutureSquamosal suture btw/ parietals & temporalsbtw/ parietals & temporals

Cranial SuturesCranial Sutures

Suture DevelopmentSuture Development

Infant SkullInfant Skull

Occipital BoneOccipital Bone

Frontal BoneFrontal Bone

Parietal BonesParietal Bones

Temporal BonesTemporal Bones

Sphenoid BoneSphenoid Bone

Ethmoid BoneEthmoid Bone

Facial BonesFacial Bones

• Maxillary bones*Maxillary bones*• Palatine bones*Palatine bones*• Nasal bonesNasal bones• VomerVomer• Inferior nasal chonchaeInferior nasal chonchae• Zygomatic bonesZygomatic bones• Lacrimal bonesLacrimal bones• Mandible*Mandible*• Hyoid bone*Hyoid bone*

Facial BonesFacial Bones

Maxillary & Maxillary & Palatine BonesPalatine Bones

Vomer; Inferior Nasal Vomer; Inferior Nasal Conchae; Lacrimals Conchae; Lacrimals

Zygomatic Bones Zygomatic Bones

MandibleMandible

Hyoid BoneHyoid Bone

Bones of the OrbitBones of the Orbit

Orbital ComplexOrbital Complex

Nasal ComplexNasal Complex

Paranasal SinusesParanasal Sinuses

• FrontalFrontal sinuses sinuses– Frontal bone of craniumFrontal bone of cranium

• MaxillaryMaxillary sinuses sinuses– Maxillary bone of faceMaxillary bone of face

• SphenoidSphenoid sinuses sinuses– Sphenoid bone of craniumSphenoid bone of cranium

• EthmoidEthmoid sinuses sinuses– Ethmoid bone of craniumEthmoid bone of cranium

• PalatinePalatine sinuses sinuses– Palatine bone of facePalatine bone of face

The Vertebral ColumnThe Vertebral Column

• CervicalCervical VertebraeVertebrae• ThoracicThoracic VertebraeVertebrae• LumbarLumbar VertebraeVertebrae

• SacrumSacrum• CoccyxCoccyx

Vertebral ColumnVertebral Column

• MOV Video runs 5 secMOV Video runs 5 sec

Spinal Column CurvatureSpinal Column Curvature

Vertebral Column & Rib CaVertebral Column & Rib Cagege

Vertebral AnatomyVertebral Anatomy

Cervical Vertebrae: Cervical Vertebrae: C1 – C7C1 – C7

Cervical VertebraeCervical Vertebrae

Atlas & Axis BonesAtlas & Axis Bones

Atlas & AxisAtlas & Axis

Thoracic Vertebrae:Thoracic Vertebrae:T1 – T12T1 – T12

Thoracic VertebraeThoracic Vertebrae

Lumbar Vertebrae:Lumbar Vertebrae:L1 – L5L1 – L5

Lumbar VertebraeLumbar Vertebrae

Sacrum:Sacrum:Fusion of 5 VertebraeFusion of 5 Vertebrae

Coccyx:Coccyx:Fusion of 3-5 VertebraeFusion of 3-5 Vertebrae

Sacrum & CoccyxSacrum & Coccyx

The Thoracic CageThe Thoracic Cage

• Costal BonesCostal Bones

• SternumSternum

Costal BonesCostal Bones

• True ribsTrue ribs superior superior 7 pairs7 pairs attached to vertebral column & directly to attached to vertebral column & directly to

sternumsternum

• False ribsFalse ribs inferior inferior 5 pairs5 pairs attach to vertebral column; but, indirectly attach to vertebral column; but, indirectly

to sternumto sternum

• Floating ribsFloating ribs last last 2 pairs2 pairs of false ribs of false ribs attach only to vertebral columnattach only to vertebral column

Thoracic CageThoracic Cage

Costal BonesCostal Bones

SternumSternum

• ManubriumManubrium superior superior attached to clavicles & 1attached to clavicles & 1stst pair of ribs pair of ribs

• BodyBody breastbreast bonebone attach to rib pairs 2 – 7 via costal cartilageattach to rib pairs 2 – 7 via costal cartilage

• Xiphoid processXiphoid process attaches to diaphragm & abdominal attaches to diaphragm & abdominal

musclesmuscles

Thoracic CageThoracic Cage

Vertebral Column & Rib CaVertebral Column & Rib Cagege

The Skeleton System Introduction The Axial Skeleton The Appendicular Skeleton.

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