  |
|
skeletal muscle |
|
|
|
| A | B |
|---|
| excitation | excitation |
| actin | actin |
| myosin | myosin |
| sarcolemma | sarcolemma |
| myoglobulin | myoglobulin |
| axon terminal | axon terminal |
| tropomyosin | tropomyosin |
| calcium ions | calcium ions |
| sarcoplasmic reticulum | sarcoplasmic reticulum |
| action potential | action potential |
|
|
