Mechanism of Muscle Contraction
Asked by Sarva Sarva · 2 years ago
What are the key steps involved in the sliding filament theory of muscle contraction?
1 Answer
The sliding filament theory explains muscle contraction through these key steps:
1. Calcium ions are released from the sarcoplasmic reticulum
2. Calcium binds to troponin, exposing myosin binding sites on actin
3. Myosin heads attach to actin, forming cross-bridges
4. Myosin heads pull actin filaments towards the center of the sarcomere
5. ATP causes myosin to detach from actin
6. The process repeats, causing muscle contraction
1. Calcium ions are released from the sarcoplasmic reticulum
2. Calcium binds to troponin, exposing myosin binding sites on actin
3. Myosin heads attach to actin, forming cross-bridges
4. Myosin heads pull actin filaments towards the center of the sarcomere
5. ATP causes myosin to detach from actin
6. The process repeats, causing muscle contraction
NEET Faculty · 1 year ago
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