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Chapter 7 & 8Chapter 7 & 8

Skeletal System

  Bones

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OverviewOverview

206 bones (average)

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OverviewOverview

206 bones (average)

Extra bones

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OverviewOverview

Extra bonesSesamoid bones  grow where

stress and tension in tendons

Feet, hands, knee ca

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OverviewOverview

206 bones (average)

Extra bonesSesamoid bones

S!t!ral bones  extremely small

bones in the s!t!re lines o" sk!ll

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OverviewOverview

206 bones (average)

Extra bonesSesamoid bones

S!t!ral bones

2 gro!s#xial skeleton

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OverviewOverview

206 bones (average)

Extra bonesSesamoid bones

S!t!ral bones

2 gro!s#xial skeleton

#endic!lar skeleton

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 Axial skeleton Axial skeleton

$he bones that make !

the longit!dinal axis o"the body

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 Axial skeleton Axial skeleton

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 Axial skeleton Axial skeleton

Sk!ll

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 Axial skeleton Axial skeleton

Sk!ll

#!ditoryossicles

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 Axial skeleton Axial skeleton

Sk!ll

#!ditory ossicles%yoid bone

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 Axial skeleton Axial skeleton

Sk!ll

#!ditory ossicles%yoid bone

&ertebral col!mn

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 Axial skeleton Axial skeleton

Sk!ll

#!ditory ossicles%yoid bone

&ertebral col!mn'ib age (thorax)

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 Axial skeleton Axial skeleton

'ib age (thorax)

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 Axial skeleton Axial skeleton

Sk!ll

#!ditory ossicles%yoid bone

&ertebral col!mn'ib age (thorax)

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 Appendicular Skeleton Appendicular Skeleton

ectoral girdle

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 Appendicular Appendicular

SkeletonSkeleton

ectoral girdle

*er

extremities

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 Appendicular Skeleton Appendicular Skeleton

ectoral girdle

*er extremities

elvic girdle

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 Appendicular Appendicular

SkeletonSkeleton

ectoral girdle

*er

extremities

elvic girdle

+ower

extremities

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Functions of Skeletal SystemFunctions of Skeletal System

S!ort

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Functions of Skeletal SystemFunctions of Skeletal System

S!ort

rotection

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Functions of Skeletal SystemFunctions of Skeletal System

S!ort

rotectionBody ovement

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Functions of Skeletal SystemFunctions of Skeletal System

S!ort

rotectionBody ovement%emooiesis

  makes blood cells

  red bone marrow

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Functions of Skeletal SystemFunctions of Skeletal System

S!ort

rotection

Body ovement

%emooiesis

ineral Storage

  alci!m and hoshor!s

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Functions of Skeletal SystemFunctions of Skeletal System

S!ortrotection

Body ovement%emooiesis

ineral StorageFat storage

yellow bone marrow ("at)

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Bone ShapeBone Shape

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Bone ShapeBone Shape

+ong Bone-reatter length than width

Slight c!rves give strength

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BoneBone

ShapeShape+ong

Bone

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Bone ShapeBone Shape

+ong Bones

Short Bones

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Bone ShapeBone Shape

+ong Bones

Short BonesFlat Bones

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Bone ShapeBone Shape

+ong Bones

Short BonesFlat Bones

.rreg!lar Bones

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Bone ShapeBone Shape

+ong Bones

Short BonesFlat Bones

.rreg!lar Bones

Sesmoid Bones

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 Axial skeleton Axial skeleton

Sk!ll

#!ditory ossicles%yoid bone

&ertebral col!mn

'ib age (thorax)

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SkullSkull

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Skull & yoid !oneSkull & yoid !one

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"erte!rae skeleton"erte!rae skeleton

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"erte!rae skeleton"erte!rae skeleton

1 Cervical curve

2 Thoraic curve

3 Lumbar curve

4 Sacral curve

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"erte!rae skeleton"erte!rae skeleton

Vertebrae disc

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#horax#horax

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 Appendicular Skeleton Appendicular Skeleton

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 Appendicular Appendicular

SkeletonSkeleton

ectoral girdle

*er

extremities

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 Appendicular Skeleton Appendicular Skeleton

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 Appendicular Skeleton Appendicular Skeleton

%i bone

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 Appendicular Appendicular

SkeletonSkeleton

ectoral girdle

*er

extremitieselvic girdle

+ower

extremities