Match the following terms with the correct definition._____ Z-disc                              a. The dark band containing                                                                            the  entire length of the thick filament _____ Sarcomere                          b. The band of proteins in                                                                              the middle of the H zone_____ A band                              c. The boundary between sarcomeres_____ H zone                             d. The functional unit of contraction_____ I band                               e. The middle region of the A band                                                 containing only thick filaments_____ M line f. The light band containing only thinfilaments

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