PE: The Skeletal System

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  • The Skeletal System
    • Support
      • Your skeleton provides a frame for your body and therefore supports you.
      • For Example, it enables you to balance when performing a handstand.
    • Aid Movement
      • 1. The bones provide a place for the muscles to ATTACH to, so they PULL the bones cause movement.
        • Movement occurs at the JOINTS of the skeleton.
      • 2. Bones also act as LEVERS. Levers allow the body to increase the force they generate or increase the speed to of the movement. This is very helpful in physical activity.
        • For example, a tennis player with longer levers will generate more force on a serve.
    • Hinge Joints
      • Located at the:
        • Knee
        • Elbow
      • Movement at the Hinge Joint
        • Flextion
        • Extension
    • Ball and Socket Joints
      • Located at the:
        • Shoulder
        • Hip
      • Movement at the Ball and Socket Joints
        • Flextion
        • Rotation
        • Adduction
        • Extension
        • Abduction
    • Protection
      • Your skeleton provides protection for your vital organs, including your heart.
      • For example, your skull protects your brain if an opponent follows through wildly with their hockey stick and it hits you in the head during a game.
      • Always use the words VITAL ORGANS and try to give and example to show your knowledge.
    • Joints
      • Knee
      • Elbow
      • Shoulder
      • Hip
    • What you need to know:
      • A joint is the part where two or more bones meet. This is where the movement can occur.
      • Although there are many joints in the human body,you only need to know the knee, elbow, shoulder and hip.
      • You will not be asked to label the skeleton. However, it is useful to know the names o the bones that make up the joints, as that will make it easier for you to describe the joint action and action of muscles.
  • Key: Yellow - examples, Green - tips, Blue - headings, Light Blue - sub-headings, Pink - title.


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