skeletal system. the framework of your body and it is made of 206 living bones (300 in babies)
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Skeletal System
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Skeletal System
• The framework of your body and it is made of 206 living bones (300 in babies)
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5 Functions of the skeletal system
1. Gives shape and support to your body
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2. Protects your internal organs
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3. Muscles attached to your bones help you move
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4. Marrow in the center of bones makes blood cells (2.5 million/second)
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5. Bones store calcium and phosphorus for our body
- Ca helps our heart and muscles work- P helps our cells produce and store energy- When stored in our bones, Ca and P help make bones
stronger
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Joints
• Any place where 2 or more bones come together.
• Ligaments hold the bones together
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5 types of joints
1. Immovable joint (little or no movement)-skull
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2. Ball and Socket (circular motion)-hip and shoulder
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3. Pivot (twisting motion)-forearm
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4. Hinge (one direction)- elbow and knee
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5. Gliding (bones slide past each other)- wrist
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