The sequence of processes that links the action potential to contraction is called
A) neuromuscular junction.
B) action potential propagation.
C) excitation-contraction coupling.
D) cross bridge formation.
E) sliding filament theory.

Question

Quizplus · Accepted Answer

Excitation-contraction coupling is the process by which an action potential triggers the release of calcium ions, which then bind to contractile proteins in muscle fibers, leading to contraction. This sequence of processes links the action potential to contraction, making C the best choice. The other options (A, B, D, E) describe various aspects of muscle physiology, but do not specifically refer to the sequence of events that links the action potential to contraction.

The Sequence of Processes That Links the Action Potential to Contraction