Skeletal System

Damnjanović Ivana

ExoskeletonEndoskeleton

• Exoskeleton– Rigid, external covering with muscles attached at

inner surface

– Arthropod chitin exoskeleton

• Thin and flexible at joints

• Secreted by living cells

• Must be molted periodically, leaving the animal unprotected

– Mollusc calcium carbonate exoskeleton

• Enlarges by adding to outer edge

LE 30-2c

Mantle

Shell (exoskeleton)

• Endoskeleton

– Hard or leathery supporting elements situated among the soft tissues

– Vertebrate skeleton consists of cartilage or combination of cartilage and bone

Skin SkeletonInner Skeleton

Skin Skeleton

Teeth

Gleđ

Inner Skeleton

Skeletal System-vertebrata

FunctionProvides frame and support for all systems

and organs. Cartilage

Flexible tissues that is not as hard as bone

Hrskavica

Skeletal System

BoneAttach musclesMeans of movementProtect internal organsStorage of minerals

Vratni region

Grudni regionSlabinski regionKrstačni

region

Repniregion

Vratni pršljeni

Ramenskipojas

Grudni pršljeni

Slabinski pršljeniKrstačniregion

Rep

Karličnipojas

Rebra

Grudna kost

Vertebral Column

Vratni pršljeni

Grudni pršljeni

Slabinski pršljeni

Krstačni pršljeni

Repni pršljeni

Trbušni region Trupni region

Grudni koš -rebra, -leđni deo kičmenice i -grudna kost

Ramenski pojasKarlični pojas

Ramenski pojas

• Karlični pojas (3 parne kosti-srasle u karlicu)

• Noge ( natkolenice, potkolenice i stopala)

• Zglob kuka• Koleno

PreponjačaSednjača

Bedrenjača

Golenjača

Butna kost

Listnjača

Skeletal System

JointsWhere different bones meet

LigamentsConnect bones together; tough tissue

Hinge Joint

Skull

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