Матеріали курсу PHY2011 - Neuroscience of communication, sensory and control systems - S1 2025 та відповіді на тести | learning.monash.edu

During excitation-contraction coupling in skeletal muscle

Ca²⁺ ions are released from the sarcoplasmic reticulum, into the muscle cell cytoplasm and bind to troponin.

✅

Ca²⁺ ions bind to tropomyosin causing a conformational change in the thin filament.

❌

The action potential spreads to the interior of the fibre via the sarcoplasmic reticulum.

❌

Calmodulin binds to the myosin head thus activating its ATPase activity.

❌

Tropomyosin detaches from troponin.

❌

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