Muscle fiber contraction is a complex physiological process that occurs within muscle cells (muscle fibers) to facilitate movement. It primarily involves the interaction between two types of protein filaments: actin (thin filaments) and myosin (thick filaments). Here's an overview of how muscle contraction works:
### Steps of Muscle Fiber Contraction:
1. **Nerve Signal Transmission**:
- The process begins when a nerve impulse (action