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Skeletal System


Appendicular skeleton

upper and lower extermities, shoulder and hip bones

Axial Skeleton

skull,ribs and vertebrae


Connect muscle to bone.


print tommorow before school/ monday before school

Hinge joint. Pivot joint. Imovable joint. gliding joint. Ball socket joint. elbow. knee. neck. skull. wrist. ankle. hips. shoulders.


Connects muscle to bone.

5 major functions

stores minerals. to make blood cells. for structure. movement. protect organs.

Spongy Bone

Light wieght, strong, many spaces.

Boens are hard

They are made up of hard minerals-calcium and phosporus.

Compact Bone

very hard, not solid. many small canals, where blood vesels enter and leave.

Outer membrane

where blood vessels and nerves enter and leave bone.


Red Marrow. Yellow Marrow. Red blood cells made. Fat is stored.




muscel contracts strongly


Muscel streches to far, pulled apart.

Happens when muscels are over-worked

How Muscels Work

one contracts, one relaxes. Muscels release energy from breaking down gluose.

Muscel Control

Voluntary. Involuntary. You dont have to think about it. Ex. Running, turning a book. Muscel you control. Ex. Cardiac.

Types Of Muscel

Skeletal. Smooth. Cardiac. attached to skeleton. React and tire quickly. attached to bone by tendon. Found In internal organs. React slow, does'nt tire easy. found in heart. does'nt tire quickly.

force that moves bones