| Front | contraction effect on light bands, H-zones, Z-lines, dark bands, and simult contraction of sarcomeres |
|---|---|
| Back | the light bands narrow, H-zones narrow and Z-lines are shorter (sarcomeres shorter), dark bands stay same width (as myosin doesnt shorten, theres just more overlapping between actin and myosin), simult contraction of lots of sarcomeres cause contraction of myofibirils and muscle fibres, creating force causing movement |
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