differences between light band and dark band
| Light band | Dark band |
| It is also called isotropic band. | It is also called anisotropic band. |
| It has thin Z-line. | It has wide H-zone. |
| It contains part of actin filaments. | It contains myosin filaments and parts of actin filaments. |
| It shortens during muscle contraction. | Its length remain unchanged during muscle contraction. |