THE BODY: BODY STRUCTURE - PowerPoint PPT Presentation

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THE BODY: BODY STRUCTURE

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  1. THE BODY: BODY STRUCTURE

  2. The purpose of your skeleton Your skeleton has three main functions. • It supports your body • It protects vital organs 3. It enables movement

  3. The functions of a tendon, cartilage and ligament Muscles are attached to the bones of the skeleton by connective tissue known as a Tendon. Ligamentsjoin bones to other bones and help provide stability in joints. Cartilage acts as a buffer to protect bones. There is cartilage at the end of bones which is hard and smooth to reduce stress i.e. stops bones rubbing together.

  4. The functions of a tendon, cartilage and ligament

  5. Muscle functions and groups of muscles • Muscles function by working in pairs or groups. E.g. when your tricep muscle relaxes and lengthens your bicep muscle contracts and shortens. • As well as enabling movement muscles are also important for good posture. Check you understand how muscles work in pairs by feeling your arm muscles (biceps and triceps) relax and contract.

  6. Arm muscles

  7. Leg muscles

  8. JOINTS Your skeleton is made up of bones, and joints are where two or more bones meet. There are 3 different types of joints: • Immovable or fixed joints such as the head. • Slightly moveable joints such as the vertebrae (spine). • Freely moveable (synovial) joints which have the greatest range of movement.

  9. Freely moveable or Synovial joints The ball and socketjoint movement is possible in all directions. Can you name two examples?

  10. Freely moveable or Synovial joints With the hinge joint movement is only possible in one direction. An open and closed movement like a door. Can you name two examples?