Page 84 - Miracles in Our Bodies
P. 84

articular cartilage


                              new center for                                bone
                              the developing
                                             cartilage
                              bone                                          developing
                                                                            cartilage
                                                                            developing
                 cartilage
                          cartilage                                         bone
                          slowly hard-
                          ening into
                          bone                  formation
                                                of y ellow
                                                bone                     developing
                           bone                 marrow                   cartilage

                                                                           developing
                            blood                                          bone
                            vessels


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                  s
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         t the  earliest  stage  of  a  t the  advanced  stage  of  a  a a child's bone

               r
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                   t

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                                              h
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             '
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           b
         b baby's     b bone     i in     t the  b baby's bone in the mother's s
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         m mother's womb         w womb
                  m
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                   b

                                                o
                 A A baby, while still in the mother's womb, is largely cartilage. Cartilage
                                                        a
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                                               w

                                                 m

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                 d develops and turns into rigid bones in time, as seen in the diagram
                        s
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                  b
                 a above.

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                                                        A As in all other bones in our r
                                                           i

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                                                             a

                                                         s
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                                                              ,
                                                                         s
                                                                            o
                                                             s
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                                                                      o
                                                        b bodies, hand bones too, ,


                                                                a
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                                                          d
                                                            i
                                                                           t
                                                                       n
                                                               h

                                                                        o
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                                                                     e
                                                        d develop as one grows
                                                          v
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                                                           e
                                                                a
                                                                        r


                                                                          w
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                                                                          y

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                                                                  t
                                                                 a
                                                              W
                                                                   i
                                                               h
                                                        o older. What is worthy of f

                                                                        h

                                                                   s
                                                             .



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                                                            ,
                                                                     ,

                                                              o
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                                                                             a
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                                                                  v
                                                                               h
                                                                      i
                                                        n note, however, is that each

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                                                                      r
                                                        o of the fingers grow propor- -
                                                          t
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                                                                         p
                                                                       w

                                                         o
                                                        t tionally to one another.
                                                                            r
                                                         i
                                                                             .
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                                                                    e
                                                                   n
                                                                  o
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                                                               t


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                                                           a
                                                                      a
                                                                       n

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