13.10 Sliding Filament Model
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13.10 Sliding Filament Model
Sliding Filament Model In order to contract, actin and myosin filaments must move past each other . Myosin pulls actin inwards to centre of sarcomere resulting in: Light back becoming narrower. Z...
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Sahith krishna on Instagram: "Muscle Contraction – Sliding Filament Theory Actin & myosin filaments slide → muscle shortens. 🔹 Steps: 1. Nerve impulse → Ca²⁺ released from sarcoplasmic reticulum. 2. Ca²⁺ binds troponin → tropomyosin shifts → actin exposed. 3. Cross-bridge formation → myosin head binds actin (ATP needed). 4. Power stroke → myosin pulls actin → contraction. 5. ATP attaches → cross-bridge detaches. 6. Relaxation when Ca²⁺ pumped back. 📌 For more lectures: drkrishnalectures 📲 Wha
Sahith krishna on Instagram: "Muscle Contraction – Sliding Filament Theory Actin & myosin filaments slide → muscle shortens. 🔹 Steps: 1. Nerve impulse → Ca²⁺ released from sarcoplasmic reticulum. 2. Ca²⁺ binds troponin → tropomyosin shifts → actin exposed. 3. Cross-bridge formation → myosin head binds actin (ATP needed). 4. Power stroke → myosin pulls actin → contraction. 5. ATP attaches → cross-bridge detaches. 6. Relaxation when Ca²⁺ pumped back. 📌 For more lectures: drkrishnalectures 📲 Wha
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