Skeletal System

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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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• 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

• Immovable joint (little or no movement)-skull

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• 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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