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                      (a) What is a ball and socket joint? Give one example.
                      (b) Which part of the skull bone is movable?
                      (c) Why our elbow cannot move backward?

               8      The X-rays show the shape of the bones of our body. We can also have
                      some idea about the number and shape of bones in some parts of our body
                      by feeling them.
                          a)  Write one place where we can feel the joint in our body.
                          b)  Who invented the X-Ray?
                          c)  How it is helpful, write any two ways?
               9      In the given picture-

                        Figure 1                                Figure 2

















                      a.      Name the joints shown in-
                                    i.Figure 1 ...................................
                                   ii.Figure 2.......................................

                      b) Write the difference between both the figure?

               10                                            Observe the diagram and answer the
                                                             following-


                                                              a)    Name the muscles in the
                                                                        given figure.
                                                              b)    How do they work? Explain.
                                                              c)    Name the tissue by which
                                                                       muscles are attached to the
                                                             bone?























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