During muscle contraction, the Z lines move closer, the I band and H zone narrow due to increased overlap of actin and myosin, while the A band's length remains constant.
- actin and myosin overlap - Z lines move closer together - I band narrows - H zone narrows - A band stays the same size
| Front | What happens to the sarcomere during contraction? |
|---|---|
| Back | - actin and myosin overlap - Z lines move closer together- I band narrows - H zone narrows - A band stays the same size |
Tags: muscles
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