Of the steps in excitation-contraction below, which step occurs before the others?

Question

Quizplus · Accepted Answer

Sodium channels opening in the fiber's membrane is the initial step that triggers the excitation-contraction coupling process. This causes an influx of sodium ions into the cell, leading to depolarization of the membrane and ultimately causing the release of calcium from the sarcoplasmic reticulum. The other steps occur in a sequential and coordinated manner following the initial depolarization.

Of the Steps in Excitation-Contraction Below, Which Step Occurs Before