Z lines 2. Sarcomere shortens during contraction 4. Myosin cocked b. ADP and Pi attached c. Myosin and actin not bound d. Blocked by Troponin complex e. Myosin has high affinity for actin and low affinity for ATP 2.
Conformational change occurs c.
Actin binding site exposed 3. Myosin binds to actin b. Myosin head becomes uncocked e. Affinity for ATP increases and affinity for actin decreases f. ATP binds to myosin g. Unbinding of myosin to actin 4. Myosin has ATPase activity b. ATP split to ADP and Pi c. Energy used to cock myosin Rigor Mortis 5. Excitation-Contraction Coupling 6.