body movements

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Across
  1. 3. which animal body is covered by a hard shell
  2. 4. example of hinge joint
  3. 7. bones in our body forms framework to give shape to our body this framework is known as
  4. 8. which aquatic animal have a streamlined body
  5. 9. muscles are attached to bones by
  6. 10. how many legs are their in a cockroach
  7. 11. fish moves with the help of
Down
  1. 1. which organ protect our lungs
  2. 2. what is formed by vertebra
  3. 3. the undulatory locomation is found in
  4. 5. we are able to bend or rotate our body only at
  5. 6. which joint does elbow have
  6. 7. the aquatic animal whose skeleton is made entirely by cartilage is