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The Body In Action

The Body In Action. (A) MOVEMENT. 1. Why do the heart, lungs, brain and spinal cord need to be protected by skeleton?. They are soft, delicate organs involved in important vital processes which can be easily damaged. State 3 functions of the skeleton. 2.

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The Body In Action

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  1. The Body In Action (A) MOVEMENT

  2. 1. Why do the heart, lungs, brain and spinal cord need to be protected by skeleton? They are soft, delicate organs involved in important vital processes which can be easily damaged.

  3. State 3 functions of the skeleton. 2. • 1. Protection(soft delicate organs are protected ) • Support( gives the body shape and form) • Movement( muscles are attached to bones )

  4. 3. If you break a bone it bleeds. Why does bone need a blood supply? Blood supplies food and minerals for growth. Which substances make bones hard? The minerals calcium and phosphorus. What gives bone its flexibility? Cartilage.

  5. 4. 4. Composition of bone • The living part of bone is made of ………… • This gives bone its …………… • The non-living inorganic part of bone is made • of ………. • This gives bone its …………… CARTILAGE. FLEXIBILITY. MINERALS. STRENGTH.

  6. 5. A roasted bone is hard but crumbles. Which bone component has been burnt away? Cartilage

  7. 6. What is the definition of a joint? Where 2 or more bones meet.

  8. 7. Complete the table below. ball and socket elbow hinge 1 direction hip all directions ball and socket knee hinge

  9. 8. Identify the parts of the knee joint shown the diagram below. FEMUR cartilage synovial membrane synovial fluid ligament TIBIA

  10. What is the function of the following parts of the knee joint? 9. Ligaments : Synovial membrane : Cartilage : Synovial fluid : Holds bones together at joint Produces synovial fluid Acts as a shock absorber Reduces friction at joint

  11. 10. What attaches muscles to bones ? Tendons

  12. 11. Which muscle must contract to bend the arm? Biceps Which muscle must contract to straighten the arm? Triceps

  13. 12. What is the name given to a pair of muscles which work opposite to each other? Antagonistic

  14. 13 What is the function of a ligament? Holds bones together

  15. This is the end of the questions for sub-topic (a) - movement These revision questions will automatically run again. If you want to return to the list of revision topics click on the back browser button on your toolbar.

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